You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jonathan Robinson, want to cancel my recent reservation due to an emergency. Please help me out with that.

ASSISTANT: Sure, I will help you. Please wait a minute.

USER: Ok.

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

USER: It's ok, thank you for your help.

ASSISTANT: Most welcome.