You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

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

ASSISTANT: Sure, may I have your name please to check the status of the reservation?

USER: Sure, my name is Michael Johnson.

ASSISTANT: Ok, please standby.

USER: Sure.

ASSISTANT: Thanks for your patience, no reservation was found on your name in the database.

USER: Ok, no problem. Thanks for your help.

ASSISTANT: Thank you for reaching us.