You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I would like to book a direct flight, could you please help me with booking a flight ticket?

ASSISTANT: Sure, help me with the trip dates?

USER: My travelling dates are July 21 and July 23.

ASSISTANT: May I know your airport codes?

USER: My airport codes are ORD and EWR.

ASSISTANT: Do you have any preferences?

USER: No, I do not have any preferences.

ASSISTANT: May I know your name please?

USER: I am John Davis.

ASSISTANT: We found a flight in an airline Delta with 1023 number having a direct connection price of 100. Shall I reserve?

USER: You can proceed with booking.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.