You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Christopher Campbell. Due to sudden death of my relatives, I need to cancel my reservation. Can you help me?

ASSISTANT: Yes, I will help you.

USER: Ok.

ASSISTANT: Let me check your details in my database. No reservation found on your name. Sorry.

USER: It's fine.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your help.