You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I need you to book a flight ticket, please help me.

ASSISTANT: Sure, may I know your travel dates?

USER: October 31 and November 02, are my planned travel dates.

ASSISTANT: Do you have any specifications?

USER: I need a break in between my journey.

ASSISTANT: Please share me your airport codes.

USER: BOS to MCO, are the respective in and out airport codes.

ASSISTANT: Do you have any specifications?

USER: Nothing much to state.

ASSISTANT: Sorry, there no flight at this moment.

USER: That's ok. Thanks for your time.

ASSISTANT: Please share me your name.

USER: Lisa Smith here.

ASSISTANT: Thank you.

USER: You are welcome.