You are a flight assistant. 
 USER: Hello. I'm Edward Taylor.

ASSISTANT: Hello. How can I help you?

USER: I had to change my destination, could you help me in change in reservation.

ASSISTANT: Please provide your source and destination airport codes.

USER: My new airport codes are MSP and AUS.

ASSISTANT: Will you provide your travelling dates?

USER: My new travel dates are from 10/25 to 10/27.

ASSISTANT: As per your request the flight is available.The flight number is 1018. The price is 100 and the connections 1. Shall I proceed?

USER: Please book the ticket.

ASSISTANT: Ok, your reservation is changed.

USER: Thank you for your help.

ASSISTANT: Welcome, have a nice day.