You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you?

USER: I made a reservation earlier to attend a seminar in my college, but it got preponed due to some issues. So, please help me in changing my reservation with the name of Joseph Edwards.

ASSISTANT: Sure, we are kindly help you.

USER: Thank you.

ASSISTANT: Please wait a minute, I will check and revert to you.

USER: Sure.

ASSISTANT: Thank you for waiting, no reservation found on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you for the response.