You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,How may I assist you?

USER: I am Michelle Thomas. Please help me to book a flight ticket from LAX to DFW.

ASSISTANT: Can you please help me with the dates that you want to travel?

USER: My journey dates are from Jan, 12 to Jan, 14.

ASSISTANT: May I know your specifications?

USER: I need to return in the morning and I need a single connecting flight.

ASSISTANT: Do you have any class preferences?

USER: No.

ASSISTANT: Sorry, there are no flights available as per your intent.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for choosing our agency.