You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to visit Seattle, will you help me in booking the flight ticket from CLT to SEA?

ASSISTANT: Sure, may I know your name please?

USER: Myself Barbara Walker.

ASSISTANT: May I know on which dates you are willing to travel?

USER: My travelling dates are Oct 11 and Oct 13.

ASSISTANT: May I know your connection limit please?

USER: I need a flight with single connection.

ASSISTANT: Do you have any other specifications please?

USER: I prefer to travel in economy class which departs in evening time.

ASSISTANT: Sorry Walker, there is no flight found as per your travelling details.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.