You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: This is Sharon Hall, I want to book ticket from HOU to DCA.

ASSISTANT: Can I know your travelling dates?

USER: Yes, I would like to depart on April 1st and also please book my return ticket on  April 3rd.

ASSISTANT: Do you have any specifications?

USER: I prefer for single connection  flight.

ASSISTANT: Ticket is found with airline Southwest for price 100 having flight number 1000.

USER: You can proceed with the booking.

ASSISTANT: Ticket is booked.

USER: Thank you.

ASSISTANT: Thanks.