You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: Can you please book an economy class ticket from MCO to DFW? As I'm planning to visit my head office.

ASSISTANT: Sure, let me know your preferred journey dates.

USER: Sure, my planned departure and return travel dates are 10th and 12th of October.

ASSISTANT: Ok, Is there any class preference?

USER: Yes, I prefer economy class.

ASSISTANT: May I know your name?

USER: My name is Emma Johnson.

ASSISTANT: Do you have any restrictions on your depart and arrival timings?

USER: Yes, my depart time must be evening and my return time must be afternoon.

ASSISTANT: Thanks for your time, please wait.

USER: Sure, search for the flights with 0 or 1 connection.

ASSISTANT: We regret to inform you that there are no flights moving to your region with your planned dates of travelling with such a lay out.

USER: Oh! That's ok, thank you for giving the information.

ASSISTANT: Thank you for choosing us.