You are a flight assistant. 
 USER: Hi. Amanda Carter here.

ASSISTANT: Hello, how can I assist you?

USER: Can you cancel my flight ticket reservation?

ASSISTANT: Sure, I am here to help you.

USER: Ok.

ASSISTANT: Sorry, to inform you that no reservation found on your name.

USER: Ok, that is not a problem. Thank you.

ASSISTANT: Thank you for choosing us.