You are a flight assistant. 
 USER: Hello. I am William Phillips.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to celebrate the Traditional festival with my parents who are staying in Houston,IAH. Could you please help me in booking a ticket with fare of 1000?

ASSISTANT: Sure, may I know your boarding point?

USER: My takeoff airport code is DEN.

ASSISTANT: Can you please share your planned travel dates?

USER: My travelling dates are 06/12 and return on 06/14.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found a Delta airline, flight number: 1012, price: 200 with one connection.

USER: You can proceed with booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.