diff --git a/backend/docs/docs.go b/backend/docs/docs.go
index 67f1019..41eefcb 100644
--- a/backend/docs/docs.go
+++ b/backend/docs/docs.go
@@ -424,17 +424,22 @@ const docTemplate = `{
         "ktmtrainbot.BookingCreateRequest": {
             "type": "object",
             "required": [
+                "contact",
+                "gender",
                 "name",
                 "passport",
                 "passportExpiry",
+                "timeCode",
                 "travelDate"
             ],
             "properties": {
                 "contact": {
-                    "type": "string"
+                    "type": "string",
+                    "example": "+6512345678"
                 },
                 "gender": {
-                    "type": "string"
+                    "type": "string",
+                    "example": "M"
                 },
                 "name": {
                     "type": "string"
@@ -443,13 +448,16 @@ const docTemplate = `{
                     "type": "string"
                 },
                 "passportExpiry": {
-                    "type": "string"
+                    "type": "string",
+                    "format": "date-time"
                 },
                 "timeCode": {
-                    "type": "string"
+                    "type": "string",
+                    "example": "1300"
                 },
                 "travelDate": {
-                    "type": "string"
+                    "type": "string",
+                    "format": "date-time"
                 }
             }
         },
diff --git a/backend/docs/swagger.json b/backend/docs/swagger.json
index 67480b4..7430a72 100644
--- a/backend/docs/swagger.json
+++ b/backend/docs/swagger.json
@@ -416,17 +416,22 @@
         "ktmtrainbot.BookingCreateRequest": {
             "type": "object",
             "required": [
+                "contact",
+                "gender",
                 "name",
                 "passport",
                 "passportExpiry",
+                "timeCode",
                 "travelDate"
             ],
             "properties": {
                 "contact": {
-                    "type": "string"
+                    "type": "string",
+                    "example": "+6512345678"
                 },
                 "gender": {
-                    "type": "string"
+                    "type": "string",
+                    "example": "M"
                 },
                 "name": {
                     "type": "string"
@@ -435,13 +440,16 @@
                     "type": "string"
                 },
                 "passportExpiry": {
-                    "type": "string"
+                    "type": "string",
+                    "format": "date-time"
                 },
                 "timeCode": {
-                    "type": "string"
+                    "type": "string",
+                    "example": "1300"
                 },
                 "travelDate": {
-                    "type": "string"
+                    "type": "string",
+                    "format": "date-time"
                 }
             }
         },
diff --git a/backend/docs/swagger.yaml b/backend/docs/swagger.yaml
index f24bf7e..7422da8 100644
--- a/backend/docs/swagger.yaml
+++ b/backend/docs/swagger.yaml
@@ -24,23 +24,31 @@ definitions:
   ktmtrainbot.BookingCreateRequest:
     properties:
       contact:
+        example: "+6512345678"
         type: string
       gender:
+        example: M
         type: string
       name:
         type: string
       passport:
         type: string
       passportExpiry:
+        format: date-time
         type: string
       timeCode:
+        example: "1300"
         type: string
       travelDate:
+        format: date-time
         type: string
     required:
+    - contact
+    - gender
     - name
     - passport
     - passportExpiry
+    - timeCode
     - travelDate
     type: object
   ktmtrainbot.BookingResponse:
diff --git a/backend/internal/ktmtrainbot/bookingmodel.go b/backend/internal/ktmtrainbot/bookingmodel.go
index 7a59f65..ac4692a 100644
--- a/backend/internal/ktmtrainbot/bookingmodel.go
+++ b/backend/internal/ktmtrainbot/bookingmodel.go
@@ -27,13 +27,13 @@ type Booking struct {
 }
 
 type BookingCreateRequest struct {
-	TravelDate     time.Time `json:"travelDate" validate:"required"`
-	TimeCode       string    `json:"timeCode" validate:"required len=4"`
+	TravelDate     time.Time `json:"travelDate" validate:"required" swaggertype:"string" format:"date-time"`
+	TimeCode       string    `json:"timeCode" validate:"required,number,len=4" swaggertype:"string" example:"1300"`
 	Name           string    `json:"name" validate:"required"`
-	Gender         string    `json:"gender" validate:"required len=1 containsany=MF"`
+	Gender         string    `json:"gender" validate:"required,len=1,containsany=MF" swaggertype:"string" example:"M" enum:"M,F"`
 	Passport       string    `json:"passport" validate:"required"`
-	PassportExpiry time.Time `json:"passportExpiry" validate:"required"`
-	Contact        string    `json:"contact" validate:"required e164"`
+	PassportExpiry time.Time `json:"passportExpiry" validate:"required" swaggertype:"string" format:"date-time"`
+	Contact        string    `json:"contact" validate:"required,e164" swaggertype:"string" example:"+6512345678"`
 }
 
 type BookingResponse struct {