You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you for the day?

USER: I have a business meeting in Houston, can you help me for booking a flight ticket from IAD to HOU?

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

USER: My travelling dates are Feb 04 and Feb 06.

ASSISTANT: May I know your name please?

USER: My name is Kenneth White.

ASSISTANT: Do you have any particular time for departing and returning?

USER: No.

ASSISTANT: Is there any airline preference?

USER: My airline preference is normal cost.

ASSISTANT: Do you have any other specifications?

USER: I need a single connecting flight.

ASSISTANT: There are no flights found on this route as per your details.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.