You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you?

USER: I need to attend my last exam at Chicago. Can you please book me a flight ticket on 09/15?

ASSISTANT: Sure, I will help you. May I know your arrival date?

USER: My arrival date is on 09/17.

ASSISTANT: Ok, Do you have any other specifications?

USER: Yes, I need one connection. 500 is my budget.

ASSISTANT: Fine, kindly mention your airport locations.

USER: Sure, my airport codes are from LAS to ORD.

ASSISTANT: Ok, please wait for a few minutes.

USER: Sure, I will wait.

ASSISTANT: Thanks for your time, we found a flight with one connection that travels from Delta airlines. The flight number is 1022 with a charge of 200.

USER: Ok, please proceed for booking.

ASSISTANT: May I know your name for booking?

USER: Samantha Allen is my name.

ASSISTANT: Ok, the ticket has been confirmed on the name of Samantha Allen.

USER: Thanks for booking my ticket.

ASSISTANT: Thanks for being in touch with us. Happy journey.