Is Personal Trainer that necessary if you are joining gym for first time.

I joined Gold Gym in Noida. I am joining any gym first time. Its been 3 days only they are asking to take Personal trainer so that you can idea how to gain strength, flexibility and build muscle later on. Should i take PT which is costing me 50-60K for 6months or maybe go for 1 month to have some consistency and then decide whether i need PT or not? Any suggestion?