You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Kevin Williams from Orlando. I would like to travel Charlotte for attending client meet there. Please, help me to book a flight ticket from MCO.

ASSISTANT: Sure, do you have any price limit?

USER: Yes, my price limit is 5000.

ASSISTANT: May I know your travelling dates?

USER: Sure, my travelling dates are 03/25 and 03/27.

ASSISTANT: What is your preferred destination?

USER: My preferred destination code is NC - CLT.

ASSISTANT: I have found a flight-1026 of Delta airlines, shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been booked, have a nice flight.

USER: I appreciate your service, thank you.

ASSISTANT: Welcome.