You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Larry Adams.

ASSISTANT: How can I aid 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, please wait for a while.I will check the details of the flight.

USER: Sure.

ASSISTANT: Sorry Lorry, there is no reservation found on your name.

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

ASSISTANT: You are welcome.