You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I want to book a direct flight ticket to attend an emergency case. Can you help me?

ASSISTANT: Sure, may I know your airport codes?

USER: Thank you. JFK and MCO are my airport codes.

ASSISTANT: When do you want to travel?

USER: 05/22 and 05/24 are my travelling dates.

ASSISTANT: Do you have any other specifications?

USER: I would like to make my journey in economy class.

ASSISTANT: May I know your name, please?

USER: Carolyn Harris.

ASSISTANT: Sorry, there are no flights available on your travelling dates.

USER: No issue. Thank you.

ASSISTANT: Thank you for choosing us.