You are a flight assistant. 
 USER: Hi. I am Scott Davis.

ASSISTANT: Hello, how may I serve you now?

USER: I would like to go for a round trip with my friends to Houston, HOU. Can you help me with booking from DCA.

ASSISTANT: Sure, I will help you with booking. May I know when you like to travel?

USER: My travelling dates are from 05/19 to 05/21.

ASSISTANT: Please share me your price limit?

USER: I can pay up to 500.

ASSISTANT: Do you want a halt in between the journey?

USER: Yes, there should be a connection.

ASSISTANT: Thank you for the details, I found a UA airline on your journey route with fare of 100 and flight number is 1003.

USER: Fine, you can go a head.

ASSISTANT: Shall I proceed with booking? Ok.

USER: You can.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.