You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you please help me in booking a flight ticket from San Francisco, SFO to New York, JFK?

ASSISTANT: Sure, please share me your trip dates.

USER: My journey dates are from May 26 to May 28.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a direct flight ticket.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: My name is Jonathan Phillips.

ASSISTANT:  Is there any other specifications?

USER: I prefer only normal cost airlines.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.