You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I need to cancel my recent reservation, can you help me in doing that?

ASSISTANT: Ok, please can I know your name please to check?

USER: I am Thomas Clark.

ASSISTANT: Ok, thank you for waiting. Sorry, there is no flight ticket available on your name to cancel.

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

ASSISTANT: Ok, thank you for assisting me.