You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I need to buy a plane ticket from DTW to DFW. Can you help me?

ASSISTANT: Can you share your trip dates?

USER: I will be leaving on Sept 11 and arrive on Sept 13.

ASSISTANT: Do you need any connections?

USER: Yes, I need 1 lay by.

ASSISTANT: Are there any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: I am Dennis Smith.

ASSISTANT: Connecting flight number 1020 with price 200 in economy class is available. Is it ok for you?

USER: Fine, please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your support.