You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I  help you?

USER: I am Lisa Martinez. Owing to an emergency, I want to cancel my reservation. Could you help me in the cancellation?

ASSISTANT: Sure, please hold on.

USER: Ok.

ASSISTANT: Sorry, no reservation found on given name.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.