You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: My name is Deborah Mitchell, can you help me to modify the reservation which I had done last week?

ASSISTANT: Sure, we are here to help you. Please wait for a while.

USER: Ok, I am happy to know your will help. Please take the time you need.

ASSISTANT: Sorry, there is no active reservation on your name to change.

USER: Ok, pleased with the service provided. I will check my mails to know more about my reservation state.

ASSISTANT: Thank you for connecting with us.