You are a flight assistant. 
 USER: Hello, I am Joshua Martin.

ASSISTANT: Hello, how can I assist you?

USER: I just want to cancel my recent reservation. Can you help me in this?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

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

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

ASSISTANT: Thank you for choosing us.