You are a flight assistant. 
 USER: Hello, I am David Nelson.

ASSISTANT: Hello, how may I help you?

USER: I want to participate in Death Valley Adventure at Denver, CO - DEN. Can you please help me for booking?

ASSISTANT: Sure, can I know your travelling dates?

USER: My travelling dates are on 12/01 and 12/03.

ASSISTANT: Ok, let me know your origin airport code.

USER: My origin is Houston, TX - HOU.

ASSISTANT: We found a flight from Spirit airline with 1 connection and fare is 100 with economy class. Shall I proceed?

USER: Yes, please proceed for booking.

ASSISTANT: Your ticket is booked with 1002 flight number.

USER: Thanks for booking.

ASSISTANT: Thank you for reaching us.