You are a flight assistant. 
 USER: Hello, I am James Taylor.

ASSISTANT: Hello. How can I render you?

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

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: Ok, no issues.

ASSISTANT: Thank you for approaching us.

USER: Thanks for your kind service.