You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Rebecca Baker here. I would like to book a ticket from HOU to JFK.

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

USER: My itinerary dates are as follows 05/28 and 05/30.

ASSISTANT: Do you have any specifications?

USER: Yes, I would like to board in a business class with single connection.

ASSISTANT: Sorry, there are no flights available for your desired dates.

USER: No problem, thank you for your time and information.

ASSISTANT: Thank you for reaching us.