Expression of Gratitude.

Study the following dialogue to express gratitude. 

 Bob: Bob, is that my pen on the chair?

 Betty: No, that's my pen.

 Bob: Do you know where my pen is?

 Betty: Yes, it's in the drawer.

 Bob: Um...that's right. Thanks so much.

 Betty: You are welcome.

Note :

Expressions of Gratitude

Thank you.

Thank you very much.

Thanks a lot.

Thanks.

Thanks for everything.

Thanks for your help.

Response

You're welcome.

Don't mention it.

Not at all.

That's okay.