You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am Samuel Anderson. I want to cancel my reservation, due to some problems I am unable to travel those dates so can you please cancel my flight ticket?

ASSISTANT: Sure, I will help you with this.

USER: Thank you.

ASSISTANT: Samuel Anderson, there is no active reservation found under your name in our database.

USER: Oh! It's ok no problem.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your information.