You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, welcome to flight booking agency.

USER: I am Jason Hill.

ASSISTANT: What can I do for you?

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

ASSISTANT: Jason Hill, please allow me to check with your previous booking.

USER: Sure, take your time.

ASSISTANT: Sorry for the inconvenience but I could not find any active reservation by your name.

USER: That's ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for approaching our services for your help.