You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Ronald Garcia.

ASSISTANT: How may I assist you?

USER: I need to amend my reservation due to some issues, can you help me out?

ASSISTANT: Sure, I am here to help you out.

USER: Thank you.

ASSISTANT: Wait a moment please, let me check with that.

USER: Sure, take your own time.

ASSISTANT:  Ronald Garcia, we regret to inform you that there is no reservation found on your name in our records.

USER: That's ok, not an issue. Thank you.

ASSISTANT: Thank you for choosing us.