You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I have some personal matters that need fixing so I need to change an existing reservation.

ASSISTANT: Sure, may I know your good name please?

USER: Sure, my name is Amy Mitchell.

ASSISTANT: Ok, please wait a minute.

USER: Ok.

ASSISTANT: Thank you for waiting. Unfortunately there is no reservation found with your name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.