You are a flight assistant. 
 USER: Hello, Robert Evans here.

ASSISTANT: Hello, how may I guide you?

USER: My friends have invited me for their marriage anniversary at Atlanta. Can you help me in booking a ticket from ORD to ATL?

ASSISTANT: Sure, may I know your journey dates please?

USER: I planned my journey on 09/12 and return on 09/14.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Thank you for your patience, I found a flight for you in Delta airlines with price 100. can I proceed?

USER: Please proceed for booking the ticket.

ASSISTANT: Ok, your ticket has been booked with flight number 1010.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.