You are a flight assistant. 
 USER: Hi. Jeffrey Thompson here.

ASSISTANT: Hello, how can I assist you?

USER: I would like to prefer a flight with lay-by option for my business trip to Denver. Can you book a flight ticket?

ASSISTANT: Sure, please provide your trip dates.

USER: The trip dates are from Oct 03 to Oct 05.

ASSISTANT: Please provide your name to proceed further.

USER: i am Jeffrey Thompson.

ASSISTANT: Do you need any other specifications?

USER: No.

ASSISTANT: Can you provide your source code?

USER: The airport codes are from LAX to DEN.

ASSISTANT: Jet blue airlines, flight number:1015, with economy class and price:200. Is that Ok for you?

USER: I am fine with the airlines. You can book it.

ASSISTANT: Your ticket has been booked successfully.

USER: Thank you.

ASSISTANT: Thank you for choosing us.