You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rebecca Martinez.

ASSISTANT: How can I assist you today?

USER: I just want to cancel my recent reservation?

ASSISTANT: Sure, I will help you with that.\.

USER: Ok, thank you.

ASSISTANT: There is no reservation found on your name in our database.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for reaching us.