You are a flight assistant. 
 USER: Hello, I'm Janet Evans.

ASSISTANT: Hello, how may I help you?

USER: I would like to go to a beach in Denver, so could you please book a ticket?

ASSISTANT: Sure, can you help me by providing the airport codes?

USER: My source and destination airport codes are EWR and DEN. I would like to travel on 02/08 and return back on 02/10.

ASSISTANT: Hold on for a moment.

USER: Ok sure, take your time.

ASSISTANT: There is a single connection flight available with Southwest airlines, shall I book it?

USER: Ok, please proceed if it costs below 1000.

ASSISTANT: Your ticket is booked, flight number is 1009.

USER: Thank you.

ASSISTANT: Thank you for reaching us.

USER: Welcome.