You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, can I know what help you are looking for?

USER: I need to cancel my reservation as I have some important work to complete.Can you help me?

ASSISTANT: Please give me a while. Can I know your name?

USER: My name is Elizabeth Evans.

ASSISTANT: There is no reservation found on your name, it might have cancelled earlier, sorry for inconvenience.

USER: It's ok, thank you for your service.

ASSISTANT: Thank you for consulting us, happy journey, we are happy to serve you anytime.

USER: Welcome.