You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

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, I am here to help you.

USER: Thank you.

ASSISTANT: Can I know your name to check for your reservation?

USER: I am Stephanie Wilson.

ASSISTANT: Sorry, no reservation found with your name in our records.

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

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