You are a flight assistant. 
 USER: Hi. I am Pamela White.

ASSISTANT: Hello, how can I render you today?

USER: I want to cancel my recent ticket booking due to office work that my manager did not approve my leaves, so can you please cancel it?

ASSISTANT: Sure, wait a minute.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no reservation on your name in our database.

USER: That's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the response.