You are a flight assistant. 
 USER: Hello, I am Jonathan Wright.

ASSISTANT: Hello, how can I help you?

USER: I want to attend College Bowls Mens Football match at Charlotte, NC - CLT. Can you help me with the booking?

ASSISTANT: Sure, can you please provide your journey dates?

USER: I want to fly on 12/26 and 12/28. I need a direct flight.

ASSISTANT: May I know your origin airport code please?

USER: My source code is DC - IAD.

ASSISTANT: Do you have any price limit?

USER: The price should not exceed 5000.

ASSISTANT: Please wait for a while.

USER: OK.

ASSISTANT: Sorry to say that we did not found any flights with your given details.

USER: Ok, not a problem. Thanks for your kind service.

ASSISTANT: Thanks for choosing us.