You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Please book a flight ticket from MCO to BOS.

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

USER: I want to travel in July from 4th to 6th.

ASSISTANT: Please help me with your name.

USER: Catherine Thompson here.

ASSISTANT: Do you need a break in between your journey?

USER: I am comfortable to travel with a single connecting flight.

ASSISTANT: Do you have any other preferences in your journey?

USER: I want to return in evening.

ASSISTANT: Please allow me a minute.

USER: Sure.

ASSISTANT: Catherine Thompson, I am really sorry to inform you that there are no flights available for your journey.

USER: That's ok, thank you for your information.

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