You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how could I help you today?

USER: I am Janet Perez.

ASSISTANT: OK.

USER: Please change my existing reservation, because I am shifting my meeting to clients location.

ASSISTANT: Ok, Please wait. I will go through your reservation and change it as you requested.

USER: Sure.

ASSISTANT: Sorry Perez, we did not find any reservation on your name with us.

USER: Ok, Thank you for the information.

ASSISTANT: Thanks for consulting us, have a good day.