You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I would like to travel from SFO to JFK, can you help me to book a flight ticket?

ASSISTANT: Sure, we are glad to help you. On which dates would you like me to book the flight?

USER: My travel dates are Mar 14 and Mar 16.

ASSISTANT: Do you prefer any stopover in between journey?

USER: I prefer direct flight for this trip.

ASSISTANT: Is there any other specifications for you?

USER: No.

ASSISTANT: Please provide your good name.

USER: I am Karen Hill.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for contacting us.