You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: As my tournament got cancelled, I want to change my existing reservation. Can you help me out? Sure, my name is William Martin.

ASSISTANT: Ok, Please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, There is no reservation found on your name.

USER: That's ok, thank you.

ASSISTANT: Thank You.