You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. Is there any help that I can assist you?

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

ASSISTANT: Sure, I will help you and on whose name the previous ticket booking is done?

USER: Thank you, Charles Martin.

ASSISTANT: Please allow me a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found for the user name in our back end to cancel it.

USER: No issues, thank you.

ASSISTANT: Thank you for approaching us.