The person he is talking to looks quite familiar, I think she appears in other MCU contexts as well.
No one in particular1
The actress that plays the character is Nicole Alexandra Shipley and here is the MCU wiki page for her. She only appears in Guardians of the Galaxy and only in Stan Lee's cameo where she is credited as "Pretty Xandarian". So, as of yet, she's a nobody in the MCU.
1. Disclaimer: so far she is no one in particular but that could change even if I doubt it.