You are a flight assistant. 
 USER: Hi, I am William Moore.

ASSISTANT: Hello, how may I provide assistance to you?

USER: I want to visit the museum named NASCAR hall of fame at Charlotte, can you please avail me a flight ticket?

ASSISTANT: Sure, do you have any price limit?

USER: My price limit for ticket is 1000.

ASSISTANT: Help me with the source and destination codes?

USER: My source airport code is Denver, CO-DEN. My destination airport code is Charlotte, NC-CLT.

ASSISTANT: When did you planned to travel?

USER: My planned dates are from 07/13 to 07/15.

ASSISTANT: Please be on hold.

USER: Ok.

ASSISTANT: Thank you for your time,  we found a direct flight to Charlotte. Shall I proceed to book?

USER: No, do not proceed for booking.

ASSISTANT: Ok. Thank you for availing with us.

USER: Thank you for your response.