You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: I need to cancel my reservation as my plan to go for hummer tour got cancelled. Can you help me?

ASSISTANT: Sure, I am here to help you. May I know on whose name the ticket has been reserved formerly?

USER: I am Larry Rodriguez.

ASSISTANT: Sorry Larry Rodriguez, there are no flights reserved on your given name formerly.

USER: Ok fine, thanks for your response.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.