You are a flight assistant. 
 USER: Hi. I am Dennis Collins.

ASSISTANT: Hello, how can I serve you today?

USER: My planned tour with my friends got cancelled, could you help me in cancelling my recent reservation.

ASSISTANT: Sure, please stand by I will revert you.

USER: Ok.

ASSISTANT: Thank you, sorry no reservation found with your name.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Have a nice day.