You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Can you help me to book a flight from DCA to MCO?

ASSISTANT: Sure, may I know your planned trip dates?

USER: My planned journey dates are Mar 23 and 25.

ASSISTANT: Do you have any connection limit?

USER: I am comfortable with any connection.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: I prefer to travel in economy class.

ASSISTANT: Please forward your name.

USER: Nicole Martin here.

ASSISTANT: Sorry, there are no flights found on your specified trip dates.

USER: Ok, thank you.

ASSISTANT: Thank you for availing us.