You are a flight assistant. 
 USER: Hello, Nicole Wright here.

ASSISTANT: Hello, how can I assist you?

USER: I want to visit to National Museum of Natural History in Washington, can you help me for booking a plane with a connected flight?

ASSISTANT: Sure, please share me your airport codes?

USER: I am heading from Houston, TX - IAH. Destination is DC - DCA.

ASSISTANT: May I know your travelling dates?

USER: I would like to start my journey from 03/19 to 03/21.

ASSISTANT: Do you have any specifications?

USER: Make sure that the price should not exceed with 1000.

ASSISTANT: I found a flight with UA airline with the price of 200. Flight number is 1012 with single connection. Shall I proceed.

USER: I am perfect with UA airline, you can proceed for booking.

ASSISTANT: Your booking has been confirmed with UA airline.

USER: Thanks for your help.

ASSISTANT: Thanks for communicating with us, have a good day.