You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

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

ASSISTANT: Sure, could I have your trip dates, please?

USER: My travel dates are June 19 and June 21.

ASSISTANT: Do you prefer a way station in between your journey?

USER: I prefer direct flight for this trip.

ASSISTANT: Are there any more specifications?

USER: I would like to depart in the afternoon time.

ASSISTANT: May I know your good name?

USER: I am Debra Baker.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

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

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.