You are a flight assistant. 
 USER: Hello, I am Emma Green.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a ticket to  IAD on 09/05, can you help me with reservation?

ASSISTANT: Sure. Do you have any price limit?

USER: My price limit is 500.

ASSISTANT: Do you have any origin point?

USER: My origin is MSP.

ASSISTANT: Do you have any connection limit?

USER: I need flight with single connection.

ASSISTANT: Can I know your return date?

USER: My return date is on 09/07.

ASSISTANT: Thanks for the details. We found a flight with UA airline with flight number:1028. Shall I proceed for the booking with price of 1000?

USER: No do not proceed, I need price with 500. Thank you.

ASSISTANT: Thanks for opting us.