You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

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

ASSISTANT: Sure, may I know your good name for the changing reservation process?

USER: My reservation was done under the name Donna Turner.

ASSISTANT:  Sorry, no activate reservation found on your name in our database.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Welcome, thank you for reaching us.