You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for the day?

USER: Actually, I have reserved a flight ticket but as I am a doctor, I got an emergency case which I have deal. So, I need to change the ticket travel dates. Can you please help me?

ASSISTANT: Sure, please provide your good name?

USER: Kathleen Hill here.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no active reservation found on your good name.

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

ASSISTANT: Thank you.