You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Due to an emergency I had to request for this change reservation. Can you please help me to change an existing reservation?

ASSISTANT: Sure, we are here to help you to change it. May I know your name?

USER: My name is Virginia Baker.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

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

USER: That's not a problem. Thanks for your information.

ASSISTANT: Thank you for contacting us.