You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I want you to make my flight reservation from LAS to LGA. Can you please help me?

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, I will depart on Mar 29th and return back on Mar 31st.

ASSISTANT: On which name shall I reserve flight ticket?

USER: Myself Robert White.

ASSISTANT: Do you need any specifications?

USER: Yes, I need direct flight.

ASSISTANT: Sorry, there are no flight tickets available on your journey dates.

USER: Oh! Not an issue. Anyway, thank you for checking.

ASSISTANT: Thank you for reaching our service.