You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Anthony White. I am planning to book a ticket from ATL to JFK. Can  you please help me out?

ASSISTANT: Ok, when you are willing to travel?

USER: I would like to travel on 05/11 and return back on 05/13.

ASSISTANT: Let me for the flight, wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, there is no flight available on your route.

USER: That's fine.

ASSISTANT: Thanks for choosing us, have a good day.

USER: Thank you for your service.