You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I want to cancel my recent reservation as my plan to meet my former colleague got postpone due to bad weather conditions. Can you help me with this?

ASSISTANT: Sure, may I know your name?

USER: I am John Collins.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

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

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

ASSISTANT: Thanks for reaching us.