You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you now?

USER: I would like to travel from DCA to SFO, can you please help me in flight booking?

ASSISTANT: Ok, may I know your planned dates for this journey?

USER: I will start on Apr 17, return on Apr 19.

ASSISTANT: Do you need a connecting flight?

USER: I need a connecting flight.

ASSISTANT: May I know your name?

USER: My name is Samuel Adams.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Flight-1011 is available for you with 1 connection in economy class by Hawaiian Airlines. Can I book it?

USER: Ok, proceed to booking.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you for choosing us.