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

ASSISTANT: Hello, how may I help you today?

USER: I am planning to meet my cousin in Houston TX - IAH, so please help me in booking a flight ticket from TX - HOU.

ASSISTANT: Sure, may I know your planned travel dates?

USER: I want to fly on 12/04 and return on 12/06.

ASSISTANT: Ok, how much you can afford for flight ticket?

USER: I can afford upto 1000.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there are no flights found with your given dates.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for opting us.