You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Please book this ticket from DTW to DFW to meet my family.

ASSISTANT: Can I know your travel dates?

USER: I have planned to travel on May 19th and return on May 21st.

ASSISTANT: Do you have any preference?

USER: I prefer connecting flight.

ASSISTANT: Let me know your name.

USER: Jessica Rodriguez.

ASSISTANT: Found ticket with Delta airlines for price 100.

USER: Ok, please book this ticket.

ASSISTANT: Your ticket is booked in an economy class having flight number 1021.

USER: Thank you.

ASSISTANT: Thank you.