You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how could I assist you today?

USER: I have to join my old friends in get together party at Chicago, can you please book me a ticket?

ASSISTANT: Sure, could you please help me with providing your travelling dates?

USER: Sure, I want to take off on 04/02 and return by 04/04.

ASSISTANT: Ok, may I know your airport codes?

USER: My source and destination airport codes are DFW and ORD.

ASSISTANT: Do you need any connection in between the journey?

USER: Yes, I need 1 connection and my price limit is 500.

ASSISTANT: Ok, can I know your good name please?

USER: My name is Lisa Mitchell.

ASSISTANT: Thank you for providing information, There is UA 1021 airline with fare of 100 matches your schedule.

USER: Please proceed with booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you so much for your service.

ASSISTANT: Thank you reaching us.