You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Debra Clark.

ASSISTANT: How can I assist you today?

USER: I am looking for a flight from Houston, can you help me in booking the flight ticket from IAH to DCA?

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

USER: My trip dates are from Jan 6th till Jan 8th.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: There are no flights available in this route as per your travel dates.

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us, have a great day.