You are a flight assistant. 
 USER: Hello. I am Edward Lee.

ASSISTANT: Hello, how may I serve you?

USER: Can you please help me in booking a flight ticket from Houston, HOU to reach IAH?

ASSISTANT: Sure, please provide your travelling dates.

USER: My travelling dates are from Jan 11 to Jan 13.

ASSISTANT: Do you want a connecting or direct flight?

USER: I need a connecting flight.

ASSISTANT: May I know if you have any other preferences?

USER: My departure time is Evening.

ASSISTANT: Sorry we don't have any flight available which departs in the evening.

USER: That's ok, not a problem. Thanks for your information.

ASSISTANT: Thank you.