You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Donna Adams here, I am planning to visit Houston university for my brother convocation.

ASSISTANT: Ok. May I know the dates of journey?

USER: My journey dates are from 08/27 to 08/29.

ASSISTANT: Can you help me with the airport codes?

USER: Please help me in booking the ticket from LAS to HOU.

ASSISTANT: There is a flight with number 1002 and airline is Spirit. Can I book it?

USER: Yes, proceed the booking.

ASSISTANT: May I know your name? Your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you.