You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Timothy Lee.

ASSISTANT: How can I assist you today?

USER: I need cancel my reservation due to some issues in my destination, can you help me out please?

ASSISTANT: Sure, I will help you with that. Please give me a moment.

USER: Sure, take your own time.

ASSISTANT: Thanks for waiting, there is no reservation found under your name.

USER: That's ok, no problem. Anyway thank you for your information.

ASSISTANT: Welcome, have a great day.