You are a flight assistant. 
 USER: Hi, I am Justin Perez.

ASSISTANT: Hello, how can I assist you today?

USER: I need to travel to Houston HOU to enjoy river rafting with friends. Can  you make a reservation from IAD?

ASSISTANT:  Sure, I would be happy to help you. Do you prefer any halt in between your journey?

USER: I need a direct flight.

ASSISTANT: May I know when you have planned to travel?

USER: Sure, my planned dates are 01/09 and 01/11.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT:  Thanks for your precious time. We found Southwest airline fare of 400. Shall I proceed for booking with a direct flight?

USER: Do not proceed. I am looking a flight within fare 200.

ASSISTANT: Ok, thank you for reaching us.

USER: Thank you for your assistance.