You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: My self Carolyn Rodriguez.

ASSISTANT: How can I serve you today?

USER: I got an invitation form Science fare exhibition, organized by my friend in Chicago. Can you be a helping hand in booking a flight ticket?

ASSISTANT: Sure, We are here to serve you. Can you provide complete journey details?

USER: My airport codes are EWR - ORD and journey dates on 06/04 to 06/06. Price limit should be 200 with single connection.

ASSISTANT: Very sorry to inform you, No flights found matching with your details.

USER: Ok, no problem, Thank you for your information and service.

ASSISTANT: Thank you, Have a pleasant day.