You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Could you please help me to book a flight ticket from Chicago to visit Central Hall in Orlando?

ASSISTANT: Ok, please can I know the name on which I have to reserve the ticket?

USER: I am Ashley Allen.

ASSISTANT: Can I know the dates of the journey you have planned?

USER: Sure, I intend to start my journey on Feb 12th and my return date will be on Feb 14th.

ASSISTANT: Ok, please let me know your specification.

USER: I want to depart in the afternoon and my return time will be in the evening.

ASSISTANT: Ok, please can I know the airport codes of your jounrey?

USER: My boarding and landing airport code are ORD and MCO.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry as per the intents provided there are no flights available to book.

USER: That's ok, I'll choose any alternative to reach my destination. Thank you for your information.

ASSISTANT: Thank you for choosing our agency.