** Shares of Indian travel and hospitality technology
provider Rategain Travel Technologies RATE.NS rise as much as
7.8% to 297.70 rupees ($3.73) in biggest pct gain since Aug. 17
** RATE on Wednesday says selected by hospitality firm
Sonder Holdings Inc SOND.O for its connectivity switch
platform urn:newsml:reuters.com:*:nFWN30R2BS
** Tieup to make it easier for agents to search for
availability of SOND's properties on travel reservation systems
** Shares at highest since Sept. 6
** More than 663,000 shares change hands by 0427 GMT vs
30-day avg of 341,576 shares
** Stock down 25.9% so far this year up to last close
($1 = 79.8150 Indian rupees)
(Reporting by Nandan Mandayam in Bengaluru)
((Nandan.Mandayam@thomsonreuters.com; Mobile: +91 9591011727;))