You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Actually my manager told me to attend a conference meeting, but that meeting has been cancelled, so I want to cancel my ticket. Can you do that for me?

ASSISTANT: Sure, please tell your name to check your details?

USER: My name is Andrew Campbell.

ASSISTANT: Sorry, there is no reservation found by your name.

USER: Ok, thank you for searching.

ASSISTANT: Thank you and have a nice day.