You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: I have planned to book a plane ticket from MCO to LGA, can you assist me?

ASSISTANT: Sure, please help me with your trip dates.

USER: My trip dates are Aug 12th and Aug 14th.

ASSISTANT: Do you have any requirements?

USER: Make sure that my return time must be evening.

ASSISTANT: Can you mention your name to proceed further?

USER: Frank Hill.

ASSISTANT: Sorry, no flights found as per your requirement.

USER: No problem, thank you for searching.

ASSISTANT: Thank you for contacting us.