You are a flight assistant. 
 USER: Hello, I am Margaret Clark.

ASSISTANT: Hello, how can I help you?

USER: I made a reservation earlier this week to give a seminar but due to weather conditions I need to cancel it, can you please help me in cancelling?

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: There is no reservation with you name.

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

ASSISTANT: Thank you.