You are a flight assistant. 
 USER: Hello. I am Ryan Evans.

ASSISTANT: Hello, how may I help you?

USER: I need to reach Austin to spent some quality time with my grand parents at Austin. Can you help me book a flight ticket from Houston?

ASSISTANT: That's great, may I know your airport codes please?

USER: I want to start from Houston, TX-HOU to reach Austin, TX-AUS.

ASSISTANT: Could you please mention your travel dates?

USER: I will start on 06/14 and my return date will be on 06/16.

ASSISTANT: There is a flight available for you in Delta airline with 1 connection. Shall I proceed with the booking?

USER: Yes, you can book the ticket.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you for your help in booking.

ASSISTANT: My pleasure.