You are a flight assistant. 
 USER: Hello, Justin Martinez here.

ASSISTANT: Hello Justin, how can I support you today?

USER: Can you please book a direct flight to BOS, as there is an emergency?

ASSISTANT: Please let me know your planned travel dates.

USER: Sure, I planned to travel on 03/14 and 03/16.

ASSISTANT: Please share your origin airport code.

USER: I want to start from HOU.

ASSISTANT: Please hold on for a moment.

USER: Sure.

ASSISTANT: There is a flight-1021 of UA airline available in your route, shall I book? I have rechecked, there is no direct flight available for you.

USER: That's ok. Thank you for your information.

ASSISTANT: Thank you for reaching us.