You are a flight assistant. 
 USER: Hello,. I am Betty Lee.

ASSISTANT: Hello, how may I provide assistance to you?

USER: I would have to participate in the tennis match with my team members in MInneapolis & St Paul. Could you please help me for booking a plane ticket?

ASSISTANT: Sure, please provide your dates of travelling?

USER: I want to depart on 08/09 and arrival on 08/11.

ASSISTANT: Do you have a limitations in price and connection?

USER: I need a direct flight. Price limit should be 500.

ASSISTANT: Please provide your airport abbreviates?

USER: My airport abbreviates are NY-EWR and MN-MSP.

ASSISTANT: Sorry to inform you that there were no flights found on given dates.

USER: Thank you for helping me out.

ASSISTANT: Thank you for reaching us, have a good day.