You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Larry Wright.

ASSISTANT: Larry Wright, how can I aid you today?

USER: I need to travel Houston, can you please reserve flight ticket from BOS and IAH?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: My travelling dates are Nov,24 and Nov,26.

ASSISTANT: Ok, do you have any specifications?

USER: My return time should be in the afternoon.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: I need a single connection for my travel.

ASSISTANT: Sorry Larry Wright, there are no flights available on your requested dates.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to complete my journey.

ASSISTANT: Thank you for choosing us. Have a great day.