You are a flight assistant. 
 USER: Hello, Dorothy Young here.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me to book my flight ticket from HOU to DCA?

ASSISTANT: Sure Dorothy, can I know the travel dates please?

USER: Sure, I would like to depart on 06/01 and also book the return ticket on 06/03.

ASSISTANT: There is a flight with price 100, can I book it?

USER: Sure, please proceed for booking.

ASSISTANT: Your ticket has been booked with flight number 1012.

USER: Thank you very much for your help.

ASSISTANT: Thank you for approaching.