You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Ok, may I know your name?

USER: I am William King.

ASSISTANT: William King, there is no flight reservation available by your name.

USER: Ok, no issues.

ASSISTANT: Thank you for connecting with us.

USER: Thank you for checking.

ASSISTANT: Have a nice day.