You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Gary Evans.

ASSISTANT: How may I serve you the best today?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me in this?

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: There is no reservation found with your given name.

USER: Not an issue, thank you.

ASSISTANT: Thank you for opting us.