You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I need your help to cancel my ticket due to some changes in my plan.

ASSISTANT: Sure, We are here to help you. May I know your name?

USER: Larry Edwards.

ASSISTANT: Give me a minute.

USER: Sure, take your own time.

ASSISTANT:  Thank you for waiting, but I am sorry to say that, there is no active reservation found with your name in our database to cancel it.

USER: That's Ok, thank you for searching.

ASSISTANT: Thank you for reaching us.