You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kathleen Lewis.

ASSISTANT: How can I guide you at this moment?

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

ASSISTANT: Sure, I will help you with this. Please give me a moment to check your reservation status.

USER: Sure, take your time.

ASSISTANT: Kathleen Lewis, there is no active reservation found under your name in our database.

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

ASSISTANT: Thank you for utilising our service.