You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I want to book a flight ticket to attend my childhood friend marriage, Can you please book me a direct flight?

ASSISTANT: Sure, we are here to support you,May I know your good name please?

USER: My name is Nicole Parker.

ASSISTANT: Could you please provide your travelling days?

USER: My schedule dates are from 04/29 to 05/01.

ASSISTANT: May I know the price limit?

USER: My price limit to book a flight ticket is 500.

ASSISTANT: Please hold on, let me check the availability of flights and revert you. To proceed for booking may I know your airport codes?

USER: My origin airport is CO-DEN and destination airport is TX-DFW.

ASSISTANT: Thank you for your information.

USER: Ok.

ASSISTANT: Sorry to inform you that there is no direct flight found.

USER: That's not a problem.

ASSISTANT: Thank you for keeping in touch with us.

USER: Thanks for your information.