You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Nicholas Martin, can you help me to amend my recent reservation?

ASSISTANT: Sure, I am here to help you out. Please allow me a moment to let the previous reservation on your name.

USER: Ok, please take your time.

ASSISTANT: Sorry Martin, there is no active reservation on your name.

USER: Ok, not a problem. Thank you for helping me with your best knowledge.

ASSISTANT: Thank you for reaching us.