You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I have made an earlier reservation to attend for a seminar at my university, due to some technical issues it has been postponed. Can you please aid me to change it?

ASSISTANT: Sure, May I know your name?

USER: Thanks for accepting my request, Emily Nelson is my name.

ASSISTANT: Please wait a second.

USER: Sure.

ASSISTANT: Sorry, No reservation found on your name.

USER: That's Ok, thanks for your assistance.

ASSISTANT: Thank you for opting us.