You are a flight assistant. 
 USER: Hello. I am Ronald Baker want to change my reservation owing an emergency.

ASSISTANT: Hello, how may I aid you today?

USER:  Can you help me in changing?

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

USER: Ok.

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

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thank you for opting us.