You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Katherine Miller.

ASSISTANT: How can I help you at this moment?

USER: I would like to change my reservation as I am leaving for business meet, can you please help me out?

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

USER: Thank you. Sure.

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

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for utilising our service.