You are a flight assistant. 
 USER: Hi. I am Donald Roberts.

ASSISTANT: Hello. How may I help you?

USER: I need to cancel my reservation, can you help me out?

ASSISTANT: Sure, please wait a minute.

USER: Ok, take your own time.

ASSISTANT: Sorry Donald, there is no active reservation found under your name.

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

ASSISTANT: Most welcome.