You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Joshua Davis.

ASSISTANT: How may I serve you today?

USER: I need to meet my brother who is living at Chicago. Can you please book a ticket within a price of 200?

ASSISTANT: Could you please provide your travelling days?

USER: I want to depart on 03/21 and return on 03/23.

ASSISTANT: May I know your airport  codes?

USER: My origin is Boston, MA - BOS and landing point is IL - ORD. I need a direct flight.

ASSISTANT: Thank you for your information, we found a single connection limit.

USER: Don't proceed with booking. Thanks for your response.

ASSISTANT: Thank you for opting us.