You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER:  I have an earlier reservation to sign a new contract for new project, due to some problems it got postponed, so I need to change my reservation.

ASSISTANT: Ok.

USER: Can you please help me in changing?

ASSISTANT: Sure, may I know your good name?

USER: I am Shirley Perez.

ASSISTANT: Thank you for sharing your good name. Please, hold on.

USER: Ok.

ASSISTANT: Thank you for your valuable time. No reservation found on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us, have a great day.