You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Ryan Walker.

ASSISTANT: How can I aid you?

USER: Can you please help me in cancelling my recent reservation?

ASSISTANT: Sure, please wait a moment.

USER: Ok, sure.

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

USER: Ok, thank you for your information.

ASSISTANT: Thank you for approaching us.