You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Carolyn Edwards.

ASSISTANT: How may I aid you?

USER: I am planning to visit Houston, can you please book me a ticket from LGA to HOU?

ASSISTANT: Sure, can you share your travel dates please?

USER: My preferable journey dates are from Feb 07 and Feb 09.

ASSISTANT: May I know your departure and return time please?

USER: I prefer to return in evening flight.

ASSISTANT: Do you have any other preferences?

USER: I prefer connecting flight.

ASSISTANT: Thanks for waiting. Sorry to say that presently there no flights available in the evening time.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you.