You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am looking for a flight from HOU to IAH, can you please help me in booking?

ASSISTANT: Sure. May I know your name please?

USER: Sure, my name is Thomas Robinson.

ASSISTANT: Tell me your travel dates and connection limit please?

USER: My travelling dates are July 25 and July 27.

ASSISTANT: Ok.

USER: I need a connecting flight.

ASSISTANT: Any other preferences?

USER: I want to depart in morning.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Thanks for waiting. But I am sorry to say that there are no flights available.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you.