You are a flight assistant. 
 USER: Hi, I am Kenneth Harris.

ASSISTANT: Hello. How can I aid you?

USER:   I want to cancel my recent ticket booking due to office work that my manager did not approved my leaves. Can you help me in cancellation?

ASSISTANT: Sure, I can help you. Please wait a while.

USER: Ok.

ASSISTANT: Thanks for your time. We didnt found any reservation by this name.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for contating us.