You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you today?

USER: Please help me to book a flight ticket from CLT to DCA.

ASSISTANT: Sure, may I know your travelling dates?

USER: My trip dates are from Feb, 26 to Feb, 28.

ASSISTANT: Ok, help me with your class preference.

USER: No.

ASSISTANT: Ok, do you need any lay by in between the journey?

USER: I need a single connecting flight only.

ASSISTANT: May I know your good name please?

USER: I am George White.

ASSISTANT: There are no flights found on your requested dates.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.