You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: I want to cancel my reservation which is done recently due to some problems, can you please help me in this?

ASSISTANT: Sure, may I know your name please?

USER: Sure, my name is Nancy Nelson.

ASSISTANT: Sorry, no reservation found on your given name.

USER: Ok, not an issue.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your service.