You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today at this moment?

USER: I need to cancel my existing reservation, as my planned trip with my friends got cancelled. Can you please help me out?

ASSISTANT: Sure, may I know your name please?

USER: Thank you for considering my request.

ASSISTANT: Please wait a moment.

USER: Myself Gregory Jackson.

ASSISTANT: Sorry there is no reservation found with your given name.

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

ASSISTANT: Thank you.