You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: My name is Joseph Allen. I like to travel from DTW to OAK.

ASSISTANT: Could you provide me your date of journey?

USER: The dates are from 12/18 to 12/20. Connection limit should be 1.

ASSISTANT: There is a flight on your preferable dates.

USER: You can proceed booking my ticket.

ASSISTANT: Flight 1005 with 1 connection limit, which costs 100 in Delta airline. Your flight ticket from DTW to OAK has been booked.

USER: Thank you, have a safe journey.