You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Please book a flight ticket on 10/21 and return flight on 10/23.

ASSISTANT: Can you please help me with your airport codes?

USER: NC - CLT and TX - AUS are my airport codes.

ASSISTANT: Here is a flight ticket with 1025 flight number and Delta as airline. Shall I proceed for booking?

USER: Ok, please book on the name of Elizabeth Lopez.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you.

ASSISTANT: Most welcome.