You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Owing for an emergency, I want to cancel my flight reservation as I am unwell, please help me.

ASSISTANT: Sure, I will help you in cancelling your ticket. Can you please help me with you name?

USER: My name is Linda Parker.

ASSISTANT:  Linda Parker, sorry there is no active reservation found in our database.

USER: That's fine. Anyway, thank you.

ASSISTANT: Thank you for reaching us.