You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Richard Scott, I want to amend my recent reservation. Please help me to change.

ASSISTANT: Sure, I will help you with that. Please wait for a minute.

USER: Ok.

ASSISTANT: Sorry, I could not find any reservation with your name.

USER: Thank you for assisting me. That's ok no problem.

ASSISTANT: It's my pleasure.