You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Shirley Williams here.

ASSISTANT: Hope your doing well Shirley?

USER: Yes, I need a help from your side.

ASSISTANT: I'll be glad to help you.

USER: As many of my friends are not showing their interest in the trip, I need to cancel my recent reservation.

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Yes, we found your reservation.

USER: Yes, cancel my reservation.

ASSISTANT: Shall I cancel your reservation surely? Ok. Your reservation is cancelled successfully.

USER: Thank you for helping me out.

ASSISTANT: Thank you and have a nice day.