You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me to book a flight from SFO to JFK?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: I want to travel on Feb 12 and need to return on Feb 14.

ASSISTANT: Do you have any other specifications?

USER: I need a direct flight.

ASSISTANT: Please help me with your name for booking.

USER: Myself Jonathan Davis.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: Ok, not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you for checking.