You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Carolyn Miller. Can you please help me in altering my reservation?

ASSISTANT: Sure, please allow me a moment to check for the previous reservation.

USER: Sure, please wait a minute.

ASSISTANT: Carolyn Miller, there is no reservation found under your name.

USER: That's fine, thank you.

ASSISTANT: Thank you for contacting us.