You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I would like to visit Austin to participate in the Haunted Austin evening adventure with my sister. Can you assist me in booking flight ticket from CO - DEN on 04/02?

ASSISTANT: Sure, may I know your destination airport code please?

USER: My destination is TX - AUS.

ASSISTANT: May I know your return date please?

USER: I intend to return on 04/04.

ASSISTANT: May I know your good name please?

USER: I am Andrew Williams.

ASSISTANT: Thank you Andrew Williams, we found a flight on your details with airline JetBlue, flight number: 1022. Shall I proceed for booking?

USER: I am comfortable with that airline, please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for assisting me.

ASSISTANT: Thanks for choosing us.