You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Carol Adams here.

ASSISTANT: What can I do for you today?

USER: The holidays are in full swing here in Detroit and it's time to celebrate. Please book a flight ticket from DFW - DTW.

ASSISTANT: Please provide me your travelling dates to book the ticket.

USER: The travel dates are 09/29 and 10/01.

ASSISTANT: Wait a moment, let me check the flight details.

USER: Ok.

ASSISTANT: I am sorry to say that there is no flight on your details.

USER: That's alright. Thank you.

ASSISTANT: Thank you for reaching us.