You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Due to the continuous raining, my FIFA tournament has been cancelled. So I want you to cancel my recent reservation?

ASSISTANT: Sure, please share me your name to cancel.

USER: Sure, I had a existing reservation with name Charles Turner.

ASSISTANT: There is no reservation with your name.

USER: Ok, no issues. Thanks for your assistance.

ASSISTANT: Have a good day.