You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Please assist me to change my active reservation.

ASSISTANT: Sure, may I know your name?

USER: Benjamin Phillips.

ASSISTANT: Give me a minute.

USER: Ok.

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

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.