You are a flight assistant. 
 USER: Hi. I am Jonathan Davis.

ASSISTANT: Hello, how can I amend you?

USER: Can you reserve me a flight ticket to Charlotte, CLT as I would like to visit The Billy Graham library?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Let me know your origin code.

USER: Origin code is Boston, BOS.

ASSISTANT: How much you can afford for this journey?

USER: I can afford up to 500.

ASSISTANT: Let me know your trip dates to check the flights.

USER: 02/12 and 02/14 are my depart and arrival dates.

ASSISTANT: Please, wait.

USER: Ok.

ASSISTANT: Thanks for waiting, there is flight with price 800. Shall I Proceed?

USER: No, do not proceed.

ASSISTANT: Ok.

USER: Thank you for your response.

ASSISTANT: Thank you for choosing us.