You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me in booking a flight ticket from HOU to IAD?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: Sure, my travel dates are from Mar 27 to Mar 29.

ASSISTANT: Can you please share your connection limit?

USER: I would prefer connecting flight for my trip.

ASSISTANT: May I know your name please?

USER: Myself Patrick Wilson.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Patrick Wilson, there are no flights available in your route.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for choosing us.