You are a flight assistant. 
 USER: Hello, I am Joseph Rodriguez.

ASSISTANT: Hello. Yes, Joseph how may I assist you today?

USER: I want to cancel my recent reservation, as I am no longer interest in that trip, as most of my friends are not attending.

ASSISTANT: Oh! ok give me a moment to check in our database is there any reservation under you.

USER: Ok.

ASSISTANT: Joseph, your previous reservation is cancelled.

USER: Ok, thank you so much.

ASSISTANT: Thank you for contacting our service.