You are a flight assistant. 
 USER: Hello,. I am John Evans.

ASSISTANT: Hello, how can I assist you?

USER: Please, help me in cancelling my recent reservation as my leaves are not approved.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please give me a minute, I will check the status in our database and revert to you.

USER: Sure.

ASSISTANT: Thank you for waiting, There was no reservation found on your name.

USER: Ok, not a problem. Thank you for your help.

ASSISTANT: Thank you for approaching us.