Hi Yogesh,
With global reach you would be able to reach your client in your other remote office location via the ExpressRoute connection.
See this documentation here, with the second image depicting ExpressRoute global reach. You can ignore the fact there are two Azure regions, you will still get the cross-connection capability from Global Reach.
https://learn.microsoft.com/en-us/azure/expressroute/expressroute-global-reach
Thanks.