You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: William Thompson here. I want to book a flight reservation on the route from BOS - IAH, can you help me please?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My travelling dates for the following journey will be from 07/08 to 07/10.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Ok, please check with the price of 500.

ASSISTANT: Sorry, there is no flights available on your requested dates.

USER: Ok, no problem. Thank you for checking with availability.

ASSISTANT: Thank you for contacting us, have a nice day.

USER: You are most welcome.