You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Elizabeth Harris, want to cancel my reservation. Please help me.

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: There is no reservation found on your name in our database.

USER: That's fine, thank you.

ASSISTANT: Thank you for reaching us.