You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Raymond Wilson here. Can you book a flight ticket from JFK to CLT?

ASSISTANT: Sure, can you share your travel dates please?

USER: Sure, my travelling dates are 12/31 and 01/02.

ASSISTANT: There is only a zero connection available. Can I book it?

USER: I need a connecting flight.

ASSISTANT: Sorry presently there is no connecting flight.

USER: No problem, thank you.

ASSISTANT: Thank you.