You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I would like to cancel my recent reservation, as my baseball tournament has been post pone. Can you help me in cancellation?

ASSISTANT: Sure, may I know your name?

USER: I am Gregory Collins.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform, no reservation found with your name.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thanks for reaching us.