You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Emma Smith.

ASSISTANT: How can I help you?

USER: I would like to attend a seminar at Austin, can you help me to book a flight ticket from DTW to AUS?

ASSISTANT: Let me know your travelling dates.

USER: My preferable journey dates are Sept 16 and Sept 18.

ASSISTANT: Do you have any preference?

USER: I would like to return back in the afternoon time.

ASSISTANT: Connecting flight can be booked with United airlines for price 300 having flight number 1015.

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

ASSISTANT: Ticket is booked.

USER: Thank you.

ASSISTANT: Thank you.