You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Eric Jackson.

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, please wait for a minute to check the reservation details.

USER: Sure, take your time.

ASSISTANT: Sorry, I cannot find any reservation with your name.

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

ASSISTANT: Thanks for contacting us, have a nice day.

USER: You are welcome.