You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Larry Thompson.

ASSISTANT: Larry, how can I assist you?

USER: Our friend's are planned a trip in the holidays, but one of our friend is suffering from typhoid. So, the trip got cancelled, can you please cancel my ticket?

ASSISTANT: Sure, let me check our database. Please hold on.

USER: Ok.

ASSISTANT: Sorry, no reservation found by your name.

USER: Ok, that's fine no problem with that, thank you for your immediate response.

ASSISTANT: Thank you for choosing us.