You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Paul Robert.

ASSISTANT: Ok.

USER: I am having some important work on the date I have booked the ticket previously, Can you help me to cancel my ticket?

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name.

USER: Ok, Thank you for your help.

ASSISTANT: Most welcome.