You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I aid you?

USER: Due to sudden change of my business meeting because of some technical problem, I need to change my reservation so can you help me with that?

ASSISTANT: Sure, may I know your name?

USER: I am Rebecca Turner.

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

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for opting us.