You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I had reserved a flight on my grand father's name but due to some health issues I would like to cancel his ticket, can you help in that?

ASSISTANT: Sure, I will help you with that, may I know your name please?

USER: Sure, his name is Brian Jackson.

ASSISTANT: I found reservation under the name of Brian, can I cancel it?

USER: Yes, please go ahead.

ASSISTANT: Your grand father's ticket was successfully canceled.

USER: Thank you for your help in ticket cancellation.

ASSISTANT: It's my pleasure.