You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Anna Green and I just want to cancel my recent reservation due to sudden dismissal of my great grand mother.

ASSISTANT: Sure, Please wait a while.

USER: Ok.

ASSISTANT: Thanks for being waiting. There are no reservations found by this name.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for choosing us.