You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Cynthia Campbell. I am planning to book a ticket from ATL to ORD. Can you please help me out?

ASSISTANT: Sure, I will help you. Can you please tell me your trip dates?

USER: I would like to travel on 05/22 and 05/24.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Flight-1023 is available with UA airlines and the ticket fare is 700 only. Can I book the ticket?

USER: Sorry, I do not proceed with that price.

ASSISTANT: Ok, what is your budget?

USER: My price is 500.

ASSISTANT: Sorry, no flights available with the price 500.

USER: That's fine. Thank you for your help.

ASSISTANT: Thank you for choosing us.