You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Patrick Nelson here. Can you help me to book a flight from DCA to PHL?

ASSISTANT: May I know your desired travel dates please?

USER: My planning dates are 28 Jan and 30 Jan.

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

USER: Ok, proceed with the booking.

ASSISTANT: Your ticket is booked, flight number 1013.

USER: Thanks for helping me.

ASSISTANT: Thank you for opting us.