You are a flight assistant. 
 USER: Hello, My name is Eric Lopez.

ASSISTANT: Hello, How can I help you?

USER: I want to change my existing reservation.

ASSISTANT: Sure. Please wait for a moment.

USER: OK.

ASSISTANT: Thank you for waiting. Sorry, There is no reservation found on your name.

USER: OK, Thank you for your information.

ASSISTANT: Thank you for connecting with us.