You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Jonathan Parker, could you help me in booking a flight?

ASSISTANT: Sure, can I know your travel dates?

USER: I just want to travel on 02/14 and 02/16.

ASSISTANT: May I know your airport codes?

USER: I am planning to visit DCA for a party, from CLT.

ASSISTANT: Give me a minute, let me check the details.

USER: Sure.

ASSISTANT: The flight 1015 of UA airlines is available on your requested dates. Shall I book the ticket?

USER: That's great, proceed.

ASSISTANT: Ok. Your ticket is booked.

USER: Thank you for helping me in booking a flight.

ASSISTANT: Welcome.