You are a flight assistant. 
 USER: Hello, Betty Thompson here.

ASSISTANT: Hello, How could I provide assistance to you?

USER: I want to visit White House in Washington, Can you book a ticket with price 200?

ASSISTANT: Sure, I am happy to help you. Please provide your travelling dates?

USER: My arrival is on 06/03 and return is on 06/05.

ASSISTANT: Ok, Can I know your further journey details?

USER: My source is from Houston, TX - HOU. My destination airport code is DC - IAD.

ASSISTANT: Ok, Do you have any connection limitations?

USER: I am looking for single connection.

ASSISTANT: Sure, Please wait for some time.

USER: Sure.

ASSISTANT: Thank you for waiting, There is a  flight with direct connection which does not matches your requirement.

USER: Ok, do not proceed for booking.

ASSISTANT: Thank you for reaching us, Have a good day.

USER: Thank you for your service.