You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Can you please reserve me flight ticket from SFO to JFK?

ASSISTANT: May I know your trip dates?

USER: My trip dates are May 27 and May 29.

ASSISTANT: Do you have any other requirements to be met?

USER: I would prefer a connecting flight.

ASSISTANT: Can I have your name please?

USER: Myself Jack Martinez.

ASSISTANT: Sorry to inform you that unfortunately there is no flights available by the given details.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you.