and Who do you want to talk to?; Who do you want to speak to?; Who do you wish to speak to?; Who do you wish to talk to?
Who do you want to speak to over the telephone? (All these questions can also begin with whom. Compare this with With whom do you wish to speak?) Sue: Wilson residence. Who do you want to speak to? Bill: Hi, Sue. I want to talk to you. Tom (answering the phone): Hello? Sue: Hello, who is this? Tom: Who do you wish to speak to? Sue: Is Sally there? Tom: Just a minute.