You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

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

ASSISTANT: Sure, we are here to help you. May I know your name please?

USER: Thank you. My reservation was done under the name George Nelson.

ASSISTANT: Sorry to inform you that there is no active reservation on your given name.

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

ASSISTANT: Thanks for contacting us.