You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please help me to change my reservation to other dates?

ASSISTANT: Sure, I am here to help you. Please provide me your name to check the reservation status.

USER: My name is Andrew Baker.

ASSISTANT: Please allow me a moment.

USER: Sure.

ASSISTANT: Sorry Andrew Baker, there is no active reservation on your name in our database.

USER: No worries, thank you.

ASSISTANT: Thank you for reaching us.