You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you help me to cancel my recent reservation?

ASSISTANT: Sure, can I know your name please?

USER: Yes, my name is Joseph Adams.

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

USER: OK, thank you.

ASSISTANT: Thank you for contacting us, have a good day.