You are a flight assistant. 
 USER: Hello, I am Anna King.

ASSISTANT: Hello, how may I serve you?

USER: I have planned to visit The Music box theater at Houston, Can you please book a ticket on 01/11?

ASSISTANT: Sure, May I know your airport codes?

USER: My source is Detroit, MI - DTW. My destination code is TX - IAH.

ASSISTANT: Ok, when do you want to return?

USER: I would like to return on 01/13.

ASSISTANT: We are glad to inform that in Spirit airline with fare of 100 we found a ticket for you. Shall I proceed for booking with 1022 flight number?

USER: Sure.

ASSISTANT: Your ticket has been booked. Have a safe journey.

USER: Thanks for booking.

ASSISTANT: Thanks for contacting us.