You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Can you please help me in cancelling my recent reservation? As my planned trip has been cancelled.

ASSISTANT: Sure, I will help you with that. Can I have your name please to check your reservation status?

USER: Sure, my name is Sandra Robinson.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I'll be online.

ASSISTANT: Sorry Sandra Robinson, no reservation has found under your name to cancel.

USER: That's fine, thank you for giving the information.

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