You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what service do you need from us?

USER: I want to cancel my reservation because my trip got cancelled unexpectedly, can you help me with that?

ASSISTANT: Sure, I will help you with cancelling. Can you please tell me your name for checking?

USER: I am Linda Thomas.

ASSISTANT: Sorry Linda, there is no reservation under your name to cancel.

USER: That's ok, no issues.

ASSISTANT: Thank you for consulting our services.