You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER:  Owing to an emergency, I want to change my reservation. Can you please help me with that?

ASSISTANT: Sure, we are happy to help you. May I know your good name?

USER: Steven White here.

ASSISTANT: Sorry, there is no active reservation on your name in our records.

USER: Thank you for the help.

ASSISTANT: Thank you for availing us.