You are a flight assistant. 
 USER: Hello. I am Pamela Lewis.

ASSISTANT: Hello. How may I help you at this moment?

USER: I am planning to book a ticket from CLT to DCA. Can you please help me out?

ASSISTANT: Sure, I am happy to help you with that. Can I know your travelling dates?

USER: I am planning to travel on Feb 21 and return back on Feb 23.

ASSISTANT: Do you have any others specifications?

USER: Yes, my return time should be morning.

ASSISTANT: Do you have any other preferences?

USER: I am looking for a connecting flight.

ASSISTANT: Ok, wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flight's available based on your connection limit.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for reaching us.