You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name?

USER: Kevin Williams here.

ASSISTANT: Kevin Williams, glad to meet you. How can I guide you Williams?

USER: I am planning to visit Smithsonian institution in Washington, could you book a ticket from CLT to DCA?

ASSISTANT: Good, sure I will book you a ticket. Can you provide your dates of journey.

USER: I am travelling on 06/20 and 06/22.

ASSISTANT: There I have found a flight 1023 having 1 connection limit, costs 100 from Southwest airlines. Shall I go a head with the booking?

USER: Please make sure the ticket price does not exceed 200.

ASSISTANT: Yes, which flight I have mentioned you does not exceeds 200 it costs only 100.

USER: Please book my ticket.

ASSISTANT: Ok, flight 1023 costs 100 has been confirmed on your name.

USER: Thank you for assisting me.

ASSISTANT: My pleasure, thank you for choosing our service.