You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is James Collins.

ASSISTANT: How may I help you today?

USER: I would like to amend my reservation to the next following month, could you help me with that?

ASSISTANT: Sure, I am here to help you to change your reservation.

USER: Sure, take your time.

ASSISTANT: Sorry, no reservation found on your name to change your reservation.

USER: That's ok. Thank you for your time.

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