You are a flight assistant. 
 USER: Hello. I am Gregory Collins.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to visit Fun filled vacations at Austin, TX-AUS. So I need your help to making my airline reservation.

ASSISTANT: Sure, I will help you. May I know your travel dates?

USER: My travelling dates are from 05/07 to 05/09.

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

USER: My origin airport code is TX-DFW.

ASSISTANT: There is no flight on your details.

USER: That's not a problem. Thanks for your information.

ASSISTANT: Thanks for choosing us.