You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: How may I serve you?

ASSISTANT: What help is required from my end?

USER: I just want to cancel my recent reservation due to my interview got cancelled.

ASSISTANT: Sure, can I know your name please?

USER: I am Ryan Green.

ASSISTANT: Sorry Ryan, there is no reservation found on your name.

USER: Ok, no issue. Thank you.