You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you for the day?

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, may I know your name?

USER: Sure, myself Joshua White.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

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

ASSISTANT: Thank you for reaching us.