You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: Myself Michael Mitchell. Can you please book me a ticket from HOU to BOS?

ASSISTANT: Sure, I am here to help you with that. Can I know your travelling dates?

USER: Sure, my planned trip dates are Aug 2nd and 4th.

ASSISTANT: Ok, please wait for a minute.

USER: Ok, sure.

ASSISTANT: Sorry to say that, there are no flight's available based on your travelling dates.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Anyways, thank you for the information.