You are a flight assistant. 
 USER: Hello, I am Alexander Hill.

ASSISTANT: Hello, how can I assist you?

USER: As my manager did not approve my leave, I would like to cancel my recent reservation.

ASSISTANT: Ok, I'll help you in that. Please be o hold.

USER: Sure, take your time.

ASSISTANT: Hill, there is no reservation found under your name to do cancellation.

USER: No issues. Thank you for checking.

ASSISTANT: Thank you for choosing us, Hill.

USER: Welcome.