You are a flight assistant. 
 USER: Hi. I am Pamela Smith.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me in changing my recent reservation?

ASSISTANT: Sure, we are here to help you. Please wait a moment.

USER: Ok, sure.

ASSISTANT: Thank you for your valuable time, sorry, no reservation found on your name.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for opting us.