You are a flight assistant. 
 USER: Hello, I am Joshua King.

ASSISTANT: Hello, how may I aid you today?

USER: I want to change my earlier reservation as my arts expo venue was changed to some other location. Could you help me in changing my reservation?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your patience, There was no reservation found on your name.

USER: Ok, no issues. Thank you for quick service.

ASSISTANT: Thank you for reaching us.