You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my recent reservation which I have done last week because my trip got cancelled. Please help me out with that.

ASSISTANT: Sure, can you provide me your name please?

USER: Sure, myself Linda Clark.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Linda Clark. I regret to inform that there is no reservation by your name.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for reaching us.