You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Can you help me to change the flight ticket which I had done last week?

ASSISTANT: Sure, I am here to help you with this. Can you please provide your name to check your reservation status?

USER: Ok, please can you check the reservation on the name Andrew Baker?

ASSISTANT: Wait a moment please.

USER: Ok, please take you time.

ASSISTANT: Andrew Baker, there is no active reservation found under your name in our database.

USER: That is ok, thank you for providing the information.

ASSISTANT: Thank you for contacting us.