You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you today?

USER: Can you help me to book a flight ticket from HOU to DTW?

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: Aug, 17 and Aug, 19 are my travel dates.

ASSISTANT: Do you have any preferences?

USER: I need connecting flight.

ASSISTANT: On what name, do I need to reserve the ticket?

USER: Donna Lee.

ASSISTANT: We found a connecting flight 1023 from American airlines has fare 100. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for opting us.