You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I want to change my recent reservation, can you please help me in changing my reservation with the name Paul Clark.

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

USER: Sure.

ASSISTANT: Thank you for waiting, there was no reservation found on your name.

USER: Its ok, thank you.

ASSISTANT: Thank you for opting us.