You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Christopher Jackson.

ASSISTANT: How shall I help you?

USER: I need to book a ticket to meet my family members on 09/19. Could you please help me in booking a ticket with fare of 200?

ASSISTANT: Please provide your travelling codes.

USER: My travelling airport codes are New York NY-EWR and Denver CO-DEN.

ASSISTANT: Please provide your return date.

USER: My travelling dates are 09/18 and return on 09/20.

ASSISTANT: Ticket can be booked with airline Southwest having connections 1, flight number 1000 and price is 200.

USER: You can proceed with booking.

ASSISTANT: Ticket is booked.

USER: Thank you.

ASSISTANT: Thanks.