You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I help 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 help me?

ASSISTANT: Sure, may I know your name?

USER: Thanks for responding. Katherine Phillips, is my name.

ASSISTANT: Ok, please wait a moment.

USER: Sure, take your time.

ASSISTANT: Sorry to say, no reservation found with your name.

USER: Ok, thanks for your kind information.