You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Richard Thompson here, I will be visiting Chicago this week. Can you help me with ticket booking?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates will be from 12/05 to 12/07.

ASSISTANT: Please share me your airport codes?

USER: My airport codes will be from DCA to ORD.

ASSISTANT: Do you prefer economy flight or business flight?

USER: Sorry to say, I do not mind any class.

ASSISTANT: We found a flight on your details with airline Southwest, flight number: 1022. Shall I book this ticket?

USER: You may proceed with booking my ticket.

ASSISTANT: Your ticket has been booked.

USER: Thank you for confirming my booking.

ASSISTANT: Thank you so much.

USER: You are most welcome.