You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I'm Kevin Parker.

ASSISTANT: Parker, nice to meet you.

USER: I would like to visit Washington during summer, so could you please book a ticket from DFW to IAD?

ASSISTANT: Sure, may I know your travelling dates?

USER: My preferable dates are 09/21 and return on 09/23.

ASSISTANT: Parker, I found UA airline with 1 connection.

USER: Can I know the price limit please?

ASSISTANT: Price limit 200.

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is confirmed with 1011.

USER: Thank you.

ASSISTANT: It's my pleasure. Have a good day.