You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Please help me to change my recent reservation.

ASSISTANT: Sure, we are happy to help you. Can you please let me know your good name?

USER: Paul Collins.

ASSISTANT: Sorry, there is no active reservation on your name in our records.

USER: Thank you for your information.

ASSISTANT: Thank you for contacting us.