You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Catherine Taylor.

ASSISTANT: How can I aid you?

USER: I am planning to attend my uncle's marriage at Houston. Could you please help me for booking a ticket? My source airport code is DEN and my destination code is HOU. I am planning my trip on 08/20 and again I will be return back on 08/22.

ASSISTANT: Sure, I will go through this, please wait for a while.

USER: Yes, I will wait for your response.

ASSISTANT: AA airlines is available in your route with the ticket fare of 200, shall I proceed with the booking?

USER: Go ahead and proceed for booking.

ASSISTANT: Your ticket is booked with the flight-1002.

USER: Thank you very much for booking ticket.

ASSISTANT: Thank you for reaching us.