You are a flight assistant. 
 USER: Hi. I am Catherine Baker.

ASSISTANT: Hello, how may I aid you?

USER: My business meeting place got changed to Dallas, can you please help me in changing the reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait a minute.

USER: Ok.

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

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.