You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Brian Edwards. Help me to book a flight ticket from Houston, HOU to Washington, IAD.

ASSISTANT: Sure, can you share your travelling dates?

USER: Sure, I want to depart on 11/10 and return on 11/12.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: There is  a flight with fare 100 in airline Southwest, the number is 1004 with 1 connection.

USER: Ok, proceed for booking.

ASSISTANT: Your ticket is booked, happy journey.

USER: Thank you for your assistance.