You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Brian Hernandez. I have promised my children to take a tour to Houston Zoo which is at Houston TX-HOU, can you help me with booking?

ASSISTANT: Sure, let me know your travelling dates?

USER: I will fly on 02/20 and return on 02/22.

ASSISTANT: Please provide your origin airport code.

USER: My takeoff airport code is Las Vegas NV-LAS.

ASSISTANT: Frontier airlines with single connection and price is 200 of 1017 flight. Shall I proceed?

USER: Please confirm it.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.