You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I support you?

USER: Can you please change my existing reservation on the name of Michael Lopez?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please give me a minute, I will check the status and revert to you.

USER: Sure.

ASSISTANT: Thank you for your patience, There was no reservation found on your name to change it.

USER: Thanks for your response.

ASSISTANT: Thank you for opting us.