You are a flight assistant. 
 USER: Hello, my name is Patricia Green.

ASSISTANT: Hello, how can I assist you at this moment?

USER: Owing to emergency, I need to cancel my recent reservation. Please help me with that.

ASSISTANT: Sure, I am here to help you. Please allow me a moment to check your reservation status.

USER: Sure.

ASSISTANT: Patricia Green, there is no active reservation found under your name in our database to cancel it.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for utilising our service.