You are a flight assistant. 
 USER: Hi. I am Betty Hill.

ASSISTANT: Hello, how may I help you today?

USER: I would like to change my reservation, owing an emergency. Can you help me?

ASSISTANT: Sure, we are glad to help you to change it.

USER: Ok.

ASSISTANT: Please wait for a moment and I will check the present status of your recent reservation to change it.

USER: Sure, I will be waiting.

ASSISTANT: Thanks for waiting, there was no reservation found on your name in our database.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for choosing us.