user: How do I find the best interior decorator and best price?

assistant: There are many ways to find the best interior decorator.  You can use tools like Angie's List, Yelp, or Google to first search for an interior decorator.  After you find someone evaluate their qualifications based on other projects they have completed.  If you like their portfolio ask them about pricing and share your requirements for your interior design project requirements.  After an agreement is made the interior project can be executed successfully between both parties for the best cost and best choice for interior designer.

user: Who wins the point in tennis?

assistant: A player who can return the ball validly when the opposite player unable to return it.

user: Based on the following paragraph on astrobiology, what is the Viking program?

assistant: The Viking program, established by NASA in the 1960s to 1970s, was the first US mission with the goal to land on Mars and search for metabolic signs of present life.