You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you for the day?

USER: I am Richard Garcia. Can you help to change my reservation?

ASSISTANT: Sure, I am here to help you with that. Please hold for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. There is no active reservation found with your name in our reservation list to change it.

USER: No issue. Thank you.

ASSISTANT: Thank you for reaching us.