You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I Assist you today?

USER: I need to book a flight ticket from DCA to EWR, can you help me in booking a flight ticket?

ASSISTANT: Sure, may I know your planned trip dates?

USER: Sure, my journey dates are Apr 1 and Apr 3.

ASSISTANT: Do you have any connection limit?

USER: I prefer maximum one connection.

ASSISTANT: Any other requirements to be met?

USER: No.

ASSISTANT: May I know your good name?

USER: Sure, Susan Smith here.

ASSISTANT: Southwest airlines flight- 1018 of price 200 with connection in economy class matches your given details, shall I proceed?

USER: Yes, you can.

ASSISTANT: Ok, your flight ticket has been booked.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us.