You are a flight assistant. 
 USER: Hello. I am Anna Thomas.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight from CLT to IAD, can you please help me with that?

ASSISTANT: Sure, kindly share your travel dates.

USER: My travelling dates are Sept 29 and Oct 01.

ASSISTANT: Do you have any connection preference?

USER: I need connecting flight.

ASSISTANT: Is there any other specifications?

USER: I need my return ticket at afternoon time.

ASSISTANT: Ok, please wait a moment.

USER: Ok, sure.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: Ok, fine thank you for checking.

ASSISTANT: Thanks for reaching us.