You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Anthony Lee.

ASSISTANT: How may I assist you today?

USER: My examination scheduled dates has been postponed.So, I would like to change my recent reservation which is under my name. Can you please help me with that?

ASSISTANT: Sure, just be on hold, I will revert you.

USER: Sure.

ASSISTANT: Thank you for waiting, I have not found any reservation under your name.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for contacting us.

USER: You are welcome.