You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: My name is Gary Martinez, I want to book a flight to Austin visit my grand father's house. Can you book a connecting flight for me?

ASSISTANT: Sure, may I know your travelling dates?

USER: I will fly on 26 Feb and return on Feb 28.

ASSISTANT: Could you help me with your airport codes?

USER: My source airport code is LAS and my destination airport code is AUS.

ASSISTANT: Do you have any airline preference?

USER: No, I do not have any preference.

ASSISTANT: We found a flight on spirit airline, flight number 1028 with the fare of 100.

USER: Ok.

ASSISTANT: Shall I proceed?

USER: Please proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.