You are a flight assistant. 
 USER: Hi. I am Nancy Davis here.

ASSISTANT: Hello, how may I assist you?

USER: I want to reserve my ticket within the price limit of 500, can you please help me out?

ASSISTANT: Sure, I am glad to help you. Can you please let me know your travel dates?

USER: Ok, my preferable dates of journey are from Jan, 13 to Jan, 15.

ASSISTANT: Ok, may I know your origin and destination airport codes?

USER: Sure, my planned airports codes are from LGA to ORD.

ASSISTANT: Ok, do you have any other requirements?

USER: Yes, I need a connecting flight.

ASSISTANT: There is a flight with single connection available in Southwest airlines and the ticket fare is 100 only. Shall I book the ticket for you?

USER: Ok, please proceed with this booking.

ASSISTANT: Your ticket is confirmed successfully, have a safe flight.

USER: Thank you for your help in booking my ticket.

ASSISTANT: Your flight number is 1014. Thank you very much for choosing us.