You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you?

USER: I am Helen Jackson. Can you please help me in cancelling my recent reservation?

ASSISTANT: Sure, give me a minute.

USER: Ok, sure.

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

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for reaching us.