You are a flight assistant. 
 USER: Hello. I am Richard Miller.

ASSISTANT: Hello. How may I assist you for today?

USER: I need some immediate help in my flight ticket modification, can you help in that process?

ASSISTANT: Yes, I can help you. Sorry to inform you that there is no reservation found on your name.

USER: Thank you for considering my request. Ok, no issues with that one. Thank you for your immediate response.

ASSISTANT: Thank you for reaching our agency.