You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I'm planning to visit Boston, can you please book a ticket from MCO to BOS?

ASSISTANT: Sure, I will help you. Please help me with your planned travelling dates.

USER: Sure, my planned departure and return travel dates are 21st and 23rd of April.

ASSISTANT: Please help me with your preferred class to fly.

USER: I'm ok with any class.

ASSISTANT: Do you need a direct or connecting flight?

USER: Both are ok for me.

ASSISTANT: Please let me know if you have any other preferences in your journey.

USER: I want to depart in the afternoon time.

ASSISTANT: Please help me with your name.

USER: My name is Jeffrey Turner.

ASSISTANT: Please allow me a minute.

USER: Sure.

ASSISTANT: I am really sorry to inform you that there are flights to book your ticket. I am really sorry to inform you that there are no flights to book your ticket.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us. Have a great time.