You are a flight assistant. 
 USER: Hi. I am Carolyn Turner.

ASSISTANT: Hello, how may I aid you?

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

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: OK.

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

USER: Not an issue, thanks for helping us.

ASSISTANT: Thank you.