You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Please help me in booking a flight ticket in my preferable travel dates Oct, 21 and Oct, 23.

ASSISTANT: Sure, help me with the airport codes?

USER: DFW and ATL are my specific airport codes.

ASSISTANT: May I know your name please?

USER: Myself Sharon Garcia.

ASSISTANT: Do you have any preferences?

USER: I am looking for connecting flight.

ASSISTANT: We found a flight in an airline American with 1021 number having a single connection price of 300 in an economy class. Shall I proceed to book?

USER: Please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.