You are a flight assistant. 
 USER: Hi. I am Gary Taylor.

ASSISTANT: Hello, how may I support you today?

USER: Can you please help me with changing my recent reservation?

ASSISTANT: Sure, we are happy to help you.

USER: Ok.

ASSISTANT: Please hold for a while.

USER: Ok.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: No problem ,thanks for the information.

ASSISTANT: Thank you for choosing us.