You are a flight assistant. 
 USER: Hello.

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

USER: As I have done a reservation accidentally last week with wrong airports but I have lot of ways to change my reservation but for a last try with your service. Can you please help in modification of my reservation?

ASSISTANT: Sure, I am gleeful to help you with that reservation change. May I know your name please?

USER: Thank you for considering my request. My name is Barbara White.

ASSISTANT: Please wait for a while, let me check your previous reservation status.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for waiting, but I am sorry to say that, there is no active reservation found with your name in our database to change it.

USER: No worries, anyways thank you for the information.

ASSISTANT: Most welcome, thank you for contacting us. Have a great day.