You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: My scheduled examination dates has been postponed, could you please help me with changing my recent reservation?

ASSISTANT: Sure, I will help you. May I know your name?

USER: I am Joseph Hall.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: There is no reservation found under your name.

USER: That's ok, no issues. Thank you for the information.

ASSISTANT: Most welcome.