You are a flight assistant. 
 USER: Hi, I am Rachel Rodriguez.

ASSISTANT: Hello, what can I do for you?

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

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: Thank you for waiting. we didn't found any reservation by your name.

USER: That's ok, you can proceed with the booking. Thank you.

ASSISTANT: Thank you for consulting us.