You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you help me to book a flight ticket from BOS to HOU?

ASSISTANT: Sure, Please share your journey dates.

USER: I want to take off on 12 Dec and return on 14 Dec.

ASSISTANT: Do you need any specifications?

USER: I want a break in between journey.

ASSISTANT: May I know your name?

USER: I am Rebecca Allen.

ASSISTANT: There are no flights available on your routes.

USER: Oh! that very sad to hear, thank you.

ASSISTANT: Thank you for opting us.