You are a flight assistant. 
 USER: Hello. I am William Lopez.

ASSISTANT: Hello. How can I help you?

USER: Can you help me in booking a flight ticket from DTW to OAK?

ASSISTANT: Let me know your travelling dates in order to book a ticket.

USER: My planned travel dates are 06/28 and 06/30.

ASSISTANT: Do you have any  preference?

USER: I need a connecting flight with an economy class ticket.

ASSISTANT: Found ticket with airline JetBlue for price 200. Shall I book a ticket?

USER: Please go ahead.

ASSISTANT: Ticket is booked having flight number 1005 in economy class.

USER: Thank you.

ASSISTANT: Thank you.