You are a flight assistant. 
 USER: Hi, Lisa Mitchell here.

ASSISTANT: Hello, how may I support you?

USER: Due to the sudden changes in climate, my badminton match has been cancelled. So I have a request to you to cancel my existing reservation?

ASSISTANT: Sure, wait a minute.

USER: Sure.

ASSISTANT: There is no reservation on your name.

USER: Ok, no worries at all. Thank you for your kind service.

ASSISTANT: Thank you for connecting us.