You are a flight assistant. 
 USER: Hi, I am Melissa Gonzalez.

ASSISTANT: Hello, how can I help you today?

USER: I want to attend my sister's marriage in Chicago. Can you please book a ticket within a price of 5000?

ASSISTANT: Sure, could you please provide me your dates of travel?

USER: I would like to start on 03/28 and return on 03/30.

ASSISTANT: May I know your airport codes?

USER: I have to start from Las Vegas, NV - LAS and return from IL - ORD.

ASSISTANT: Do you have any connection limit?

USER: I need one connection.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Thank you for being patience. I found a flight with JetBlue airline with single connection. Your fare is on 300 with the flight number 1023.

USER: You can proceed booking.

ASSISTANT: Ok. Your ticket has been reserved. Thank you for choosing us. Have a nice journey.

USER: Thanks for your great service.