You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I assist you?

USER: My name is Charles Martin. Due to continuous rain my cricket tournament has been cancelled, and I had a request to cancel my reservation.

ASSISTANT: Sure, Charles Martin. Can you please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting. We did not found any reservation based on your details provided.

USER: OK, thanks for your valuable information.

ASSISTANT: Have a great day ahead.