You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Larry Brown.

ASSISTANT: How can I assist you?

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

ASSISTANT: Sure. Please, wait.

USER: Ok.

ASSISTANT: There is no reservation found on your name.

USER: Not an issue. Thank you for your kind information.

ASSISTANT: Thank you.