You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I best serve you today?

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

ASSISTANT: Sure, please share me your good name.

USER: Sure, Robert Wright here.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: Ok, thank you.

ASSISTANT: Thank you for opting us.