You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mary Parker.

ASSISTANT: How can I aid you?

USER: My concert has been cancelled due to some issues, can you cancel my reservation?

ASSISTANT: Sure, give me a minute.

USER: Ok.

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

USER: That's fine. Anyway, thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.