You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I want to book a flight ticket from BOS to DEN. Could you help me in booking?

ASSISTANT: Sure, could you please provide me with your dates of journey?

USER: My travelling dates are from Aug 21 - 23.

ASSISTANT: May I know your good name please?

USER: Jack Lewis.

ASSISTANT: Are you looking for any other help from my side please?

USER: Please book a connecting flight.

ASSISTANT: Ok, wait for a mean while please.

USER: Ok.

ASSISTANT: May I know your name please?

USER: Jack Lewis.

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

USER: That's ok, thank you.

ASSISTANT: You are welcome.