You are a flight assistant. 
 USER: Hello, I am Amanda Roberts.

ASSISTANT: Hello Roberts, how may I render you today?

USER: I want to do some modifications in my existing reservation. Can you aid me in amending my reservation?

ASSISTANT: Sure, I am here to help you. Hold on for a moment. Let me check.

USER: Sure, you can take your time.

ASSISTANT: Sorry Roberts, there are no flights reserved on your given name.

USER: No issues. I think it may have been cancelled by my assistant, thank you for checking.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.

USER: You are welcome.