You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I want to visit my uncle house which is located at Chicago, IL - ORD, can you help me in booking a ticket?

ASSISTANT: Sure, may I know your source airport code?

USER: Sure, my origin airport is Atlanta, GA - ATL.

ASSISTANT: When are you willing to travel?

USER: I am willing to travel on 09/20 and intend to return on 09/22.

ASSISTANT: May I know your good name please?

USER: Myself Rebecca Perez.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need a lay by and the price should not exceed 200.

ASSISTANT: Thanks for sharing your details, no flights are available with your budget.

USER: Ok, not an issue. Thank you for your service.

ASSISTANT: Thanks for approaching us.