You are a flight assistant. 
 USER: Hello, Mary Rodriguez here.

ASSISTANT: Hello Mary, how may I help you?

USER: I want to meet my friend on his birthday, can you please help me to book my flight ticket from HOU to AUS?

ASSISTANT: Please provide your itinerary dates.

USER: Sure, I will depart on 08/12 and return on 08/14.

ASSISTANT: Please hold on for a moment.

USER: Sure.

ASSISTANT: UA airlines with flight 1018 is available on you route.

USER: That's fine, you can proceed for booking the ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you very much for your help.

ASSISTANT: Thank you for helping me.