You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I need your help to book a flight ticket.

ASSISTANT: Sure, I will help you in booking a flight ticket. Please help me with your airport codes.

USER: ORD and MCO are my depart and arrival airport codes.

ASSISTANT: May I know your trip dates?

USER: May 1 and 3 are my planned travel dates.

ASSISTANT: Do you have any connection limit preference?

USER: I need a direct flight.

ASSISTANT: Do you have any other specifications?

USER:  I prefer to fly in a economy class.

ASSISTANT: To book a flight ticket please help me with your name.

USER:  My name is John Perez.

ASSISTANT: John Perez, sorry as per your request there is no direct flight available.

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us.