You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My name is Joshua Martinez. I would like to book a flight ticket to meet my friend in Houston, can you help me for booking a flight ticket from DTW to HOU?

ASSISTANT: Let me know your travelling dates.

USER: My travelling dates are July 02 and July 04.

ASSISTANT: Do you have any preference?

USER: My return time is afternoon.

ASSISTANT: Connecting flight can be booked with airline Delta for price 100 having flight number 1013.

USER: Ok, please proceed for booking.

ASSISTANT: Ticket is booked.

USER: Thank you for booking.

ASSISTANT: Thank you.