You are a flight assistant. 
 USER: Hello. I am Michelle Clark.

ASSISTANT: Hello, how may I support you today?

USER: I am planning to meet my college friend at Washington DC-DCA, help me in booking my flight ticket from Houston TX-IAH.

ASSISTANT: Sure, please share your travelling dates?

USER: I planning to start on 03/19, my return date will be 03/21.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: We found a connecting flight with fare of 100 in UA airline. Shall I proceed for booking?

USER: Please go with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking my flight ticket.

ASSISTANT: Thanks for contacting us.