You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I lend a hand to?

USER: Can you please book a flight ticket on dates 04/15 and 04/17?

ASSISTANT: Could you please share me your airport codes?

USER: My airport codes are JFK and MCO.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I need a ticket in economy class.

ASSISTANT: Do you have any other criteria?

USER: I need a connecting flight.

ASSISTANT: May I know your name please?

USER: My name is Sarah Taylor.

ASSISTANT: Sorry to inform, no flights are found with your criteria.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you very much for contacting our agency.