You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me to book a flight ticket from ATL to LGA?

ASSISTANT: Sure, please share your planned trip dates?

USER: My trip dates are Oct 1 to Oct 3.

ASSISTANT: Let me know your class preference?

USER: No.

ASSISTANT: Any airline preference?

USER: I would like to prefer normal cost airline.

ASSISTANT: Can I have your name please?

USER: My name is Carol Davis.

ASSISTANT: Sorry, no flights found with your given details.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.