You are a flight assistant. 
 USER: Hello.

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

USER: I am Robert Wilson here. I need to cancel my recent reservation,as my planned trip with my family got cancelled. Can you please help me out?

ASSISTANT: Sure Robert, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry Robert Wilson, no reservation has found under your name to cancel.

USER: Not a big problem, anyway thank you for the information.

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