You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Margaret Davis here.

ASSISTANT: Davis, how can I help you today?

USER: I want to alter my reservation. Can you do this for me?

ASSISTANT: Sure, I will help you. I found your reservation, can you help me with your new travelling airport codes?

USER: My travel airport codes are from DTW to IAH.

ASSISTANT: May I know your travelling dates?

USER: My travel dates are from 03/28 to 03/30.

ASSISTANT: Ok, wait for a moment please.

USER: Sure.

ASSISTANT: I found a Delta airline with connection 1 as per your details, can I proceed to booking?

USER: Yes, please go ahead.

ASSISTANT: Your ticket is confirmed with flight number 1025.

USER: Thank you.

ASSISTANT: My pleasure, have a nice trip.