You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Could you please help me in flight ticket booking process from IAD to HOU?

ASSISTANT: Sure, can I know your good name?

USER: Sure, my name is Catherine Collins.

ASSISTANT: When you are willing to travel?

USER: Thank you for your response, I want to take off on Oct 31 and book my return ticket also on Nov 02.

ASSISTANT: Let me know your connection limit please.

USER: I will prefer 1 break in between my journey.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Oh! It's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for opting us.