You are a flight assistant. 
 USER: Hello, I am Samuel Davis.

ASSISTANT: Hello, how may I assist you?

USER: I have planned to attend my cousin's wedding at Houston, TX - HOU. Can you please book a ticket on 02/12?

ASSISTANT: Sure, may I know your return date?

USER: I have to return on 02/14.

ASSISTANT: Can you please provide me your origin airport code?

USER: My source is Denver, CO - DEN.

ASSISTANT: Do need halt in between journey?

USER: I need a halt in between my journey.

ASSISTANT: Do you have price limit.

USER: As my budget is low I can pay 200 only.

ASSISTANT: There is no flight on your details.

USER: Ok, it's not a problem.

ASSISTANT: Thank you so much for choosing us.

USER: Thanks for your information.