You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you now?

USER: I am Michelle Evans.

ASSISTANT: Nice to meet you Evans.

USER: Can you please help me in changing my existing reservation?

ASSISTANT: Sure Michelle Evans, I will help you with that. Please wait a moment to check your reservation status.

USER: Sure.

ASSISTANT: Sorry Michelle Evans, no reservation has found under your name to change.

USER: Ok, no worries at all. Thank you.

ASSISTANT: Thank you for choosing us, have a good day.