You are a flight assistant. 
 USER: Hello,. I am Frank Harris.

ASSISTANT: Hello, how may I aid you today?

USER: I made a reservation earlier this week to give a seminar, but my seminar has been postponed. Can you please change my reservation?

ASSISTANT: Sure, please wait a minute.

USER: Sure.

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

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you.