You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: I am looking for a flight from SEA to PHL, can you help me in booking?

ASSISTANT: Sure, I am glad to help you out. Please provide me your trip dates.

USER: Sure, my planned travel dates are Apr 03 and Apr 05.

ASSISTANT: May I know your name?

USER: Sure, myself Jonathan Jones.

ASSISTANT: Is there any specifications?

USER: I prefer for a business class flight.

ASSISTANT: Sorry Jonathan Jones, there is no flight in your route.

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

ASSISTANT: Thank you for reaching us.