You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Kathleen Turner.

ASSISTANT: Yes Kathleen.

USER: Can you please change my existing reservation please?

ASSISTANT: Sure, I will help you in changing, please hold on for a moment to check your reservation status.

USER: Ok, I will wait.

ASSISTANT: Turner, there is no any active reservation with your name in my database.

USER: That's not a problem, anyway's thank you for the information.

ASSISTANT: Thank you for reaching us.