You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: My name is George Miller. Can you please check the availability of flights from LAX to DEN?

ASSISTANT: Sure, let me know your trip dates please?

USER: My trip dates are 4 and 6 on the month of Sept.

ASSISTANT: Do you have any specific depart and arrival timings?

USER: My return time is morning.

ASSISTANT: Ok, is there any class preference?

USER: I am comfortable with any class.

ASSISTANT: May I know your connection limit?

USER: I need a connected flight.

ASSISTANT: Do you need any airline preference?

USER: I am fine with any airline.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: That's Ok, thanks for your help.

ASSISTANT: Thanks for reaching us, have a nice day.