You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to cancel my trip due to some business issues, so please help me to cancel a recent reservation.

ASSISTANT: Sure, I can help you. Just tell me your name for checking.

USER: My name is Joseph Jones.

ASSISTANT: Sorry for inconvenience, we didn't found any reservation Joseph.

USER: It's ok, thank you for the information.

ASSISTANT: Thanks for reaching us.

USER: You are welcome.