You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Amy White from Atlanta. I am planning to attend a Musical Concert from ATO to ATL. Can you make a reservation for me?

ASSISTANT: I am here to help you, can you please provide me your travel dates?

USER: Sure, my planned trip dates are on 07/14 and return on 07/16. Actually I want to change my source code that is ATL.

ASSISTANT: Ok, I will check for the available flights and let you know.

USER: Ok.

ASSISTANT: Single connection flight is available with UA airlines and the ticket fare is 100 only. Shall I book the ticket for you?

USER: Yes, please confirm the ticket.

ASSISTANT: Amy, your ticket is booked and your flight number is 1011.

USER: Thank you for your help.

ASSISTANT: You are most welcome and thank you for choosing us.