You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you for  the day?

USER: Christopher Miller here. I want to book a ticket from ORD to ATL. Could you help me?

ASSISTANT: Sure, can you please share your price limit?

USER: My price limit is 200.

ASSISTANT: When you are planning to make your journey?

USER: My travelling dates are from 04/07 to 04/09.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: We found a airlines that matches your criteria, Frontier as airline, flight number 1018 and the fare is 200, 1 stopover.

USER: Yes, please proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.