You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Stephen Lopez. Owing to an emergency, I want to cancel my recent reservation.

ASSISTANT: Just hold on a moment.

USER: Sure.

ASSISTANT: We are sorry to inform, there is no reservation found with your provided name.

USER: Not an issue, thank you.

ASSISTANT: Thank you for reaching us.