You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Raymond Campbell.

ASSISTANT: How can I help you out?

USER: I would like to book a ticket from LGA to DEN, can you please help me out?

ASSISTANT: Sure, I am perky to help you. May I know your trip dates please?

USER: I am travelling on these dates DEC 13th and 15th.

ASSISTANT: Do you have any break in between journey?

USER: I need a single connected flight.

ASSISTANT: Would you please let me know your specific depart and arrival timings?

USER: I prefer departure time in the morning.

ASSISTANT: Is there any class preference for you?

USER: I don't have any class preference.

ASSISTANT: Kindly mention your airline preference.

USER: I don't have any airline preference.

ASSISTANT: Thanks for providing details, we regret to inform you that there are no flight services are available on this route with your preferences.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for contacting us.