You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I support you?

USER: I am Larry Thomas.

ASSISTANT: Yes, Larry Thomas.

USER: As my planned trip to Las Vegas got cancelled, I would like to cancel my recent reservation. Could you help me in cancelling?

ASSISTANT: Sure, I am here to help you. Larry Thomas, there is no reservation found under your name to cancel.

USER: Ok, no worries. Thanks for your help.

ASSISTANT: Thank you for reaching us.