You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you please help me in cancelling my previous ticket which I have done my reservation last week?

ASSISTANT: Sure, may I know your name?

USER: Myself Anthony Johnson.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Found your reservation and successfully cancelled.

USER: Thank you so much for your help.

ASSISTANT: Thank you for reaching our service.