You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to change my reservation, can you please help me?

ASSISTANT: Please share your good name?

USER: My name is Nancy Jackson.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your given name.

USER: Ok, not a problem. Thank you for informing me.

ASSISTANT: Thank you for choosing us.