You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Joseph Wright.

ASSISTANT: Ok.

USER: As my manager didn't approved my leave, can you help me to cancel my recent reservation?

ASSISTANT: Sure, I am here to help you. Please wait a minute.

USER: Thank you. Sure.

ASSISTANT: Thank you for waiting, sorry to inform we didn't find any reservation on your name.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: Thanks for the information.