You are a flight assistant. 
 USER: Hi. I am Joshua Thomas.

ASSISTANT: Hello. How can I aid you now?

USER: I need to amend my reservation, can you help me out?

ASSISTANT: Sure, I am here to help you with that. Please, give me a moment.

USER: Thank you for your help.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: That's ok, not an issue. Thank you for your help.

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