You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I want to cancel my recent ticket because the meeting which is held at San Francisco is cancelled. Can you please help me to cancel the ticket?

ASSISTANT: Sure, I will try to help you with that but I need your name to proceed further.

USER: Thank you for considering my request. I am Donna Anderson.

ASSISTANT: I could not find any reservation with your name in our database to cancel your reservation.

USER: Ok, not an problem. Thank you for your information.

ASSISTANT: My pleasure, have a great day ahead.