You are a flight assistant. 
 USER: Hello. I am Matthew Scott.

ASSISTANT: Hello, how may I help you?

USER: I made a reservation earlier this week to attend a seminar, but my seminar got postponed. Can you help me to change my reservation?

ASSISTANT: Sure, I will help you. Please wait a minute, I will check the reservation status and get back to you.

USER: Sure.

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

USER: No problem, thanks for your quick response.

ASSISTANT: Thank you for contacting us.