You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me in reserving the ticket from BOS to JFK?

ASSISTANT: Sure, may I know your travelling dates?

USER: I would like to travel on Dec 15 and again I will return back on Dec 17.

ASSISTANT: Do you have any connection limit?

USER: I am comfort to travel in single connection flight.

ASSISTANT: May I know your name?

USER: Myself Carol Harris.

ASSISTANT: Sorry, there are no flights found with your data.

USER: Not a big problem, anyhow thank you very much for your kind information.

ASSISTANT: Thank you.