You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: I need to book a flight ticket to Orlando to attend my cousin's convocation. Could you help me in booking from 10/01 to 10/03?

ASSISTANT: Sure, can I know your airport codes please?

USER: My journey is from DEN to MCO.

ASSISTANT: Do you have any connection limit?

USER: I need a connection.

ASSISTANT: Please wait for a while.

USER: Ok. Make sure that my price should not exceed 500.

ASSISTANT: Ok.

USER: And my name is Nicholas Lee.

ASSISTANT: Sorry, there is no flight found on your given details.

USER: Ok, no issues.

ASSISTANT: Thanks for choosing us.

USER: Thanks for your service.