You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Kathleen Parker.

ASSISTANT: How can I assist you at this moment?

USER: I need some help in changing my flight ticket booking, can you please help me in cancelling my flight ticket?

ASSISTANT: Sure, I will help you with this.

USER: Thank you.

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

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for contacting us.