You are a flight assistant. 
 USER: Hello, I am Dennis Collins.

ASSISTANT: Hello, how may I serve you today?

USER: I am planning to celebrate my birthday in New York, so please book a flight ticket from MCO to EWR.

ASSISTANT: Sure, can you please provide your journey dates?

USER: I want to fly on Mar 31, return on Apr 02.

ASSISTANT: Do you prefer business or economy class in your journey?

USER: I am comfortable with any class.

ASSISTANT: May I know your connection limit please?

USER: I want a single connection flight.

ASSISTANT: Ok, please be on hold.

USER: Sure, my depart time should be afternoon.

ASSISTANT: Sorry, there are no flights are available on your chosen dates.

USER: Not an issue, thank you.

ASSISTANT: Thank you for choosing our services, we hope to serve you again.