Who is the lead singer of Imagine Dragons?
user
I’m sorry I don’t know the name of the lead singer of Imagine Dragons.  Do you want to look it up on Google?
assistant
That's okay. Thank you.
user
It’s no problem.  You’re very welcome.
assistant
Who is the lead singer of Imagine Dragons?
user
I’m sorry I don’t know the name of the lead singer of Imagine Dragons.  Do you want to look it up on Google?
assistant
That's okay. Thank you.
user
You’re welcome.
assistant
Who is the lead singer of Imagine Dragons?