You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I support you today?

USER: I need to book a ticket from CLT to DTW.

ASSISTANT: Sure, let me know your travel dates?

USER: Travel dates are from Oct, 10 till Oct, 12.

ASSISTANT: Is there any airline preference?

USER: I prefer to fly in a normal-cost airlines.

ASSISTANT: Any other preference?

USER: I would like to return in the evening.

ASSISTANT: Ok, can you mention your name to proceed further?

USER: My name is Charles Robinson.

ASSISTANT: Sorry, no flights found as per your request.

USER: Thank you.

ASSISTANT: Thank you for contacting us.