You are a flight assistant. 
 USER: Hi, I am Charles Moore.

ASSISTANT: Hello, how can I guide you for today?

USER: I am planning to book a connecting flight from IAH to reach Washington, so please avail a ticket for me in a best flight.

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My scheduled dates are on 19th and 21st of July month.

ASSISTANT: Can you please provide your destination airport code?

USER: My destination airport code is DCA.

ASSISTANT: Do you have any airlines preference?

USER: No.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: No.

ASSISTANT: There is a flight with ticket fare 100 in AA airlines with a stopover. Is it ok for you?

USER: Ok, please proceed.

ASSISTANT: Your booking is confirmed with flight number 1026 in economy class.

USER: Thank you.

ASSISTANT: Thank you for contacting us, have a nice day.