You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am Dorothy Turner. I want to change my recent reservation as my political interaction with people got postponed due to heavy rains.

ASSISTANT: Sure, I am here to help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name to change your reservation.

USER: Ok, Thank you for your help.

ASSISTANT: Thank you for choosing us, have a nice day.