You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to book a flight ticket to SEA from DTW, can you please help me out?

ASSISTANT: Sure, do you have any limits on number of connections?

USER: No issues with connection.

ASSISTANT: Can you please share your travelling dates?

USER: Sure, my planned travelling dates are Nov 25 and 27.

ASSISTANT: Do you have airlines preference?

USER: Yes, I prefer normal-cost airline.

ASSISTANT: Is there any other requirements?

USER: Yes, my depart time must be in afternoon.

ASSISTANT: Can I get your name?

USER: Sure, my name is Raymond Davis.

ASSISTANT: Sorry, there are no flights found based on your details.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for choosing us.