You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Can you help me to book a flight ticket from CLT to BOS?

ASSISTANT: Sure, I am here to help you out. Can you please share your travel dates?

USER: My travelling dates are 24 and 26 of Sep.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: May I know your airline preference?

USER: I don't have any airline preference.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name to proceed further?

USER: I am Larry Wright.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for choosing us.