You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Margaret Young from Austin. I have made an earlier reservation to attend for a seminar, due to some technical issues my seminar has been postponed. Can you help me to change my reservation on my name?

ASSISTANT: Sure, please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found with your name.

USER: Ok, no worries at all. Thanks for your information.

ASSISTANT: Thank you for reaching us.