You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I'm planning a small trip to Dallas, can you please book the ticket from LGA to DTW?

ASSISTANT: Sure, I am here to help you. Please let me know your travelling dates.

USER: Sure, my planned departure and return travel dates are 2nd and 4th of Dec.

ASSISTANT: Do you prefer any lay by in between journey?

USER: I prefer single connected flight to travel.

ASSISTANT: Are there any other specifications for you?

USER: I want to depart in the afternoon time.

ASSISTANT: May I know your good name?

USER: My name is Donna Anderson.

ASSISTANT: Sorry, we are unable to provide flights on your journey routes.

USER: Oh! That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you for availing us.