You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Andrew Lopez, can you help me to book a flight ticket from ORD to ATL?

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

USER: OK, my travel dates are 12/15 and 12/17 respectively.

ASSISTANT: Here is a flight with 1 stop and airfare is 200, can I proceed with it?

USER: Ok, go ahead.

ASSISTANT: Your ticket has been booked with 1021 flight in Delta airlines.

USER: Thank you .

ASSISTANT: Thank you for reaching us.