You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Robert Smith. Can you help me in cancelling my recent reservation?

ASSISTANT: Sure, I will help you to cancel your reservation.

USER: Thank you.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: I found your reservation and it is successfully cancelled.

USER: Ok, thank you for the help.

ASSISTANT: Welcome, have a nice day. Thank you for choosing us.