You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for today?

USER: I am looking for a flight from BOS to JFK, can you help me in booking the flight ticket?

ASSISTANT: I am here to help you in booking your flight ticket. Can you please let me know your scheduled dates of journey?

USER: Sure, my planned travel dates are July 15 and July 17.

ASSISTANT: Do you need any connecting flight for this trip?

USER: Actually, I need a direct flight as there is an emergency case in New York.

ASSISTANT: Can you please let me know your name for booking purpose?

USER: Sure, Jason Johnson is my name.

ASSISTANT: Do you have any other requirements for this trip?

USER: I would like to prefer for an economy class. So, please can you check for it?

ASSISTANT: Yes, I am here at your service.

USER: Thank you.

ASSISTANT: Sorry to say this Jason Johnson, I am not able to find any flight for your journey on your planned dates of journey.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: You are welcome, thank you for reaching us.