You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can You help me to book a economy class flight ticket?

ASSISTANT: Sure, On which dates would you like me to book a flight ticket for you?

USER: My travel dates are May 20 and May 22.

ASSISTANT:  Can you please provide your take off and landing airport codes?

USER: My airport codes are DTW and ORD.

ASSISTANT: Let me know your connection limit.

USER: I am comfortable with any connection.

ASSISTANT: Do you have any other requirements?

USER: I don't have any requirements.

ASSISTANT: May I know your good name please?

USER: My name is Eric Evans.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: We found Delta airlines with flight number 1021, having a direct flight with economy class.

USER: Please proceed to book my flight ticket in this airlines.

ASSISTANT: Your ticket has been reserved with price 200.

USER: Thank you.

ASSISTANT: Thank you fr choosing us.