You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Linda Allen.

ASSISTANT: How may I aid you? Nice to meet you Linda.

USER: I need to cancel my reservation due to some personal issues.So can you help me with cancellation of my reservation?

ASSISTANT: Sure, I will help you with flight ticket cancellation. Please wait.

USER: Sure.

ASSISTANT: I have searched online but I could not find your flight reservation to cancel it.

USER: No problem, thank you for the information.

ASSISTANT: Thank you.