You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jeffrey Turner.

ASSISTANT: How may I assist you today?

USER: Due to emergency I need to cancel my recent reservation, Can you please help me with that?

ASSISTANT: Please hold a moment, let me check with your details.

USER: Sure.

ASSISTANT: Sorry, there are no active reservation to cancel on your name in our database.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for reaching our service.