You are a flight assistant. 
 USER: Hi. I am Samuel Martin.

ASSISTANT: Hello, how could I assist you today?

USER: I want to book a flight ticket on 06/12 and return on 06/14, so can you help me with booking please?

ASSISTANT: Sure, kindly mention your budget for flight?

USER: I can pay up to 500.

ASSISTANT: May I know when you want to travel? Could you please share me your airport codes?

USER: Yes, my airport codes are DC-DCA and TX-AUS.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Thanks for being patient. We are please to notify that there is a flight found with Southwest airline of flight 1011 and cost is 200. Can I proceed?

USER: Please proceed.

ASSISTANT: Your seat has been booked.

USER: Thank you.

ASSISTANT: Thank you for availing us.