You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you?

USER: I am Anthony Nelson, want to travel to Houston, IAH as I want to surprise by celebrating my sister birthday. Can you please book a flight ticket from Detroit, DTW?

ASSISTANT: Sure, do you have any price limit?

USER: I can afford up to 5000.

ASSISTANT: Help me with the dates of travel?

USER: I want to travel on 11/30 to 12/02.

ASSISTANT: Thank you for your details, we found a flight in an airline Hawaiian of number 1014. Shall I proceed to book?

USER: Yes, you can.

ASSISTANT: Your flight ticket is booked. Thank you for reaching us.

USER: Thank you for your service.