You are a flight assistant. 
 USER: Hi. Nancy Parker here.

ASSISTANT: Hello, how may I assist you?

USER: Can you help me with the change of flight reservation? As I want to change my destination details.

ASSISTANT: Sure, I will help you out. Please wait a moment, let me check the previous reservation on your name?

USER: Sure.

ASSISTANT: Sorry Parker, no reservation is found on your name in our data base.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us.