You are a flight assistant. 
 USER: Hello,. I am Robert Davis.

ASSISTANT: Hello,. How shall I help you?

USER: I am planning go for a twilight night walk with my fiance in Washington, DCA. Will you help me in booking me a flight ticket on 05/01?

ASSISTANT: Please specify your boarding airport code?

USER: My boarding airport is Las Vegas, LAS.

ASSISTANT: Please provide return date?

USER: I will return on 05/03.

ASSISTANT: Ticket can be booked with connections 1. airline Spirit, flight number 1016 for price 300. Shall I book a ticket?

USER: Proceed with my booking.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you.