You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while. I will check your status and revert you.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for waiting, we did not find any active reservation on your name.

USER: That's Ok, thanks for your service.

ASSISTANT: Thank you for choosing us.