You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am John Lopez. Actually I need to attend the marriage function which is going on in Seattle. Can you please check the flight availability?

ASSISTANT: Sure John. May I know your source and destination codes?

USER: Airports codes are IL-ORD and WA-SEA.

ASSISTANT: Could you please provide your journey codes?

USER: My planned dates are 11/13 and 11/15.

ASSISTANT: OK. Based on your request I got a flight having price as 800 and connection limit as 1. Shall I proceed to book this flight ticket?

USER: May I know flight number and airline name?

ASSISTANT: Sure. The airline name is UA and flight number is 1018. May I proceed to book this ticket?

USER: The price limit should be under 500.Please verify that.

ASSISTANT: Sorry there are no flights available as per your price limit.

USER: OK. Please don't proceed with booking.

ASSISTANT: OK.

USER: Thank you for your service.

ASSISTANT: Thank you.