You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

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: How can I help you? Sure, may I know your name please?

USER: My name is Amy Thompson.

ASSISTANT: I am sorry no reservation found on your name?

USER: It's ok, thank you.

ASSISTANT: Thank you for choosing us.