You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: Myself Steven Turner, I would like to change my flight reservation as I am unwell, could you please do that for me?

ASSISTANT: That's great to know, can you please allow me to check your previous booking for a moment?

USER: Sure.

ASSISTANT: Steven Turner, sorry to say but there is no flight reservation available by your name.

USER: Oh! That's fine. Anyway, thank you for checking.

ASSISTANT: Thank you for approaching our services. Have a nice day ahead.