You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Carol Robinson here.

ASSISTANT: Nice to meet you today.

USER: I would like to fly from DCA to CLT, can you help me for booking?

ASSISTANT: Sure, how long your trip?

USER: My fly starts from 10/13 to 10/15. Connection limit should be 1.

ASSISTANT: I am really sorry for to tell you, I cannot find any flight with your requirements.

USER: Ok, that's fine. Thank you for your best services.

ASSISTANT: It's my pleasure.