You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I serve you?

USER: I want to book a ticket from HOU to DCA, can you help me?

ASSISTANT: Sure. Tell me your name please?

USER: I am Stephen Allen.

ASSISTANT: May I know your class preference please?

USER: I want to travel in economy class.

ASSISTANT: May I know your travel dates please?

USER: My travel dates are 09/19 and 09/21.

ASSISTANT: Do you have any other preferences?

USER: I need a connecting flight.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: I have found Jet blue airlines which is flying with one connection.

USER: You can book it.

ASSISTANT: Yes, I have confirmed your flight ticket.

USER: Thank you for booking.

ASSISTANT: Thank you.