You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: As my manager didn't approved my leave due to some work So, I want to cancel my recent reservation. Can you help me with that?

ASSISTANT: Sure, can I know your name please?

USER: Sure, Amy Mitchell is my name.

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

USER: That's Ok, thanks for your help.

ASSISTANT: Thank you for approaching us.