You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you at this moment?

USER: I have to reach Houston-HOU, so can you find a flight ticket from my region DFW?

ASSISTANT: Sure, can you provide your preferable dates of journey?

USER: Sure, my dates are 04/04 and back on 04/06.

ASSISTANT: Please, provide your name for further proceedings.

USER: My name is Justin Martin.

ASSISTANT: Sorry Justin, there is no flights as per your planned dates of journey.

USER: Ok, that's fine, I can reach other agencies to book my flight ticket.

ASSISTANT: Ok, thank you for opting our service.

USER: Welcome.