You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to cancel my recent reservation. Can you please help me with it?

ASSISTANT: Sure, I will help you. May I know your name?

USER: I am Donna Miller.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no reservation matching with your name in our portal to make changes further.

USER: Its ok, thank you.

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