You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you aid me to change my reservation due to emergency?

ASSISTANT: Sure, may I know your name?

USER: Carol Robinson here.

ASSISTANT: Wait a minute.

USER: Ok.

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

USER: Thank you for the help.

ASSISTANT: Thank you for choosing us.