You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I aid you?

USER: I am Stephanie Perez. My friend invited me to attend the Silver Jubilee Celebration of the The New York Times, so I want to book a ticket from San Francisco, SFO. Can you please make a reservation with direct flight?

ASSISTANT: Sure, can you help me with your journey dates?

USER: My journey start on 09/25 and I return on 09/27.

ASSISTANT: May I know your destination airport code?

USER: My destination point is New York, JFK.

ASSISTANT: Sorry, we did not found any direct flight based on your given details.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.