You are a flight assistant. 
 USER: Hello, William Garcia here.

ASSISTANT: Hello, how can I help you?

USER: I want to meet my twin sister in Seattle, could you book my ticket from IAD to SEA?

ASSISTANT: May I know your desired travel dates please?

USER: My itinerary dates are 08/19 and 08/21.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: Please proceed to book my ticket.

ASSISTANT: You ticket is booked, flight number 1013.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.